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“But wait! There’s more!”

Thu, 02/13/2014 - 4:16pm

Stacy Stoldt is never not working on an exhibition.

Even when the Lenhardt Library’s public services manager is staffing the desk, answering reference questions, and locating articles for staff, the “million and one” details involved in putting together the library’s four annual rare book exhibitions are percolating in her brain.

 Stacy Stoldt organizing bookshelves.

Stacy Stoldt awaits patrons in the Lenhardt Libary.

Stoldt has streamlined the process since she first began working at the Chicago Botanic Garden in 2007, but it remains a lot of work to curate an exhibition. “There’s the research, the writing, the editing, the design, the approvals,” she said last month. “Here we are in January, and we’re in the design phase of our next exhibition, which opens in February, but back in November I was already meeting with someone about books for an exhibition that opens this May. There’s always a deadline looming.”

Stoldt loves her work, and one of her chief pleasures is deciding which literary treasures will be selected. It is a process involving research, more research, and finally, she says, just a bit more research. The excitement of finding the perfect volume has prompted Stoldt to burst into song (just ask cataloger Ann Anderson, a neighbor in the basement office who sometimes joins in).

The public services manager and her colleagues have many volumes from which to choose: in 2002, the Lenhardt Library acquired a magnificent collection of 2,000 rare books and 2,000 historic journals from the Massachusetts Horticultural Society of Boston.

An Exhibition Takes Shape

 A meeting with a dozen people gatherered around rare books.

Stoldt shows rare books to a group in the rare book reading room.

Before Stoldt begins hunting down books, there are meetings to decide Lenhardt Library exhibition topics for the year. That process begins with a brainstorming session including Stoldt, Lenhardt Library Director Leora Siegel, and Rare Books Curator Ed Valauskas. Sometimes the trio bases their topics on themes within the collection, such as the upcoming succulent show that features the work of A.P. de Candolle and botanical-rock-star-illustrator Pierre-Joseph Redouté.

Alternatively, they might collaborate with another botanical library on a theme, as happened when the Lenhardt Library team worked with the New York Botanical Garden’s LuEsther T. Mertz Library on the recent exhibition Healing Plants: Illustrated Herbals. Other times, they select topics that complement events held at the Garden, such as Butterflies in Print: Lepidoptera Defined, which ran in conjunction with last summer’s Butterflies & Blooms.

Newest Exhibition Focuses on Orchids

 An illustration of Masdevallia coccinea from an illustrated book panel.

The Lenhardt Library’s newest exhibition, Exotic Orchids: Orchestrated in Print, runs through Sunday, May 11. This image is from Xenia Orchidaceae: Beiträge zur Kenntniss der Orchideen, by Heinrich Gustave Reichenbach.

The newest Lenhardt Library exhibition complements the Orchid Show and is titled Exotic Orchids: Orchestrated in Print. Running through Sunday, May 11, it features such rare books as Charles Darwin’s seminal On the Various Contrivances by which British and Foreign Orchids are Fertilised by Insects, and on the Good Effects of Intercrossing, published in 1862. Another item is Curtis’s Botanical Magazine, with a beautiful color illustration of Angraecum sesquipedale, also known as Darwin’s orchid. “One doesn’t come alive without the other,” said Stoldt. “I’m always trying to put the connections together for people.”

For some exhibitions, Stoldt does it all—A to Z. For others, she receives the researched text, citations, and selected illustrations from Valauskas or Siegel and develops the material into an exhibition. Once the topics are established, research is completed, and explanatory text is written and edited, graphic designers enter the picture. Stoldt selects images from the featured books to use with the accompanying text, and then the designers work their magic. Along the way, Stoldt and Siegel review the progress. The result is an exhibition compelling not only for its content but for its elegant layout, which extends throughout the display cases that greet visitors as they enter the library.

Accompanying library talks are on Tuesday, February 18, and Sunday, March 9, at 2 p.m.

“For our new Exotic Orchids exhibition, we really wanted to show some bling!” said Stoldt. Within the Rare Book Collection, there was so much to choose from on orchids that she found the selection process daunting. Visitors to the exhibition will find the beauty and science of orchids well-represented, and discover items about orchid conservation and preservation as well.

Art Conservation Key to Documenting Plants

Stoldt noted that conserving the books and the artwork that document a plant’s existence is almost as important as preserving the actual plant. In cases two and three of Exotic Orchids, there are select illustrations from two orchid collections, Les Orchidées (1890) and Les Orchidées et les Plantes de Serre (1900–10), which the Lenhardt Library recently had conserved by the Northeast Document Conservation Center (NEDCC) through grant funding from the National Endowment for the Humanities (NEH).

How did the conservation process work? Professionally trained book and paper conservators removed the illustrations from their original acidic bindings; then the inks were tested, the surfaces were cleaned, and the illustrations were digitally photographed. Then the illustrations were placed in chemically stable folders and housed in custom-made boxes made from lignin-free archival boards. Conservation completed!

 An unidentified Cypripedium, or slipper orchid.

Cypripedium VIII. color plate

The Rare Book Collection

Stoldt recently brought out some rare volumes to demonstrate the variety within the Rare Book Collection. As noted on its web page, the collection reflects a relationship between people and the plant kingdom that has been documented since the earliest days of print, when botanists were not simply plant describers, but explorers.

Out came volume after volume, with Stoldt pointing out noteworthy details about each. Among them was the oldest book in the collection, Historia Plantarum, written by Theophrastus (d. 287 B.C.E.) and published in 1483 (it has some unusual marginalia). There was also an exquisite Japanese book on flower arranging, Nageire Kadensho: Saishokuzu Iri, published in 1684 and donated by longtime library volunteer Adele Klein. Stoldt continued her informal presentation with seemingly boundless enthusiasm, finishing with lush life-size images from The Orchid Album, published between 1882 and 1897.

More than once, Stoldt returned a book to the vault at the end of the show-and-tell only to call, “but wait! There’s more!” as she glimpsed another book she absolutely had to show. This librarian really, really loves her books. And she feels very protective of them.

Stoldt recalled the horror she felt once when she was installing an exhibition, with a rare book exposed nearby on a book “cradle”: “There was a sign that said ‘Exhibit installation in progress: please do not touch the rare books,’ but this person came in from the rain and loomed over it, dripping wet. I got her out of the way, but that was a close one.”

Cultivating Relationships

More often, visitors are sensitive to the delicate state of the Garden’s rare books. Some Garden members make a point of coming to each new exhibition and attending the free gallery talk. “One patron always calls from Wisconsin to find out about the next talk,” said Stoldt. “And once, a library regular who came to a talk told me how much she loved the book Brother Gardeners [about eighteenth-century gardeners who brought American plants to England]. I was able to show her some books by the book’s featured plantsmen, including Joseph Banks, John Bartram, and Phillip Miller, among others. It’s what I call an ‘on-demand rare-book viewing.’ She was thrilled. These are the kinds of things that lead to relationships with people.”

Devoted patrons feel that the library and its exhibitions enhance their lives; in turn, some are moved to enhance the Rare Book Collection. “We have our patrons, and then we have our patron saints,” said Stoldt. One patron who came to the 2009 exhibit on Kew Garden’s 250th anniversary enjoyed the accompanying talk by Ed Valauskas so much that she donated the 1777 edition of Cook’s Voyage, or A Voyage Towards the South Pole, by Captain James Cook, which had been in her family for family for decades. And longtime members John and Mary Helen Slater made it possible for the library to acquire 11 volumes of Warner’s Orchid Album.

Inspiring the Next Generation

Stoldt loves to see the excitement she feels about the Garden’s Rare Book Collection spreading to a new generation. She recalled a day when a grandfather brought his grandson to the library, and the child asked to see a rare book. “I asked him what he was interested in, and he said, ‘poisonous plants.’ First, I showed him Histoire des Plantes Vénéneuses et Suspectes de la France by Bulliard, a book on poisonous plants written in French from the eighteenth century, but what really spoke to him was a book with the ‘coolest illustrations!’ entitled Poisonous Plants, Deadly, Dangerous and Suspect, Engraved on Wood, 1927, by John Nash. This kid was just amazed. I love seeing young readers light up when they’ve found something intriguing for them in print. It’s heart-warming.”

 Cattleya aclandiae.

Cattleya aclandiae from a rare book color plate

Although that particular drop-in visit and viewing request occurred on a busy weekend day, another library staff member was available to manage the circulation desk while Stoldt showed the books. “I can’t stress enough the importance of making an appointment for a viewing,” she said. “Besides kids, grandparents, and garden clubs, people from all over the world come to Lenhardt Library to see primary resources they can’t find elsewhere. We’ve had writers and scholars from England and the Netherlands, and even a Thai princess, come to see the Rare Book Collection. Everyone is welcome.”

Don’t be surprised if you come to see one specific book in the collection and end up seeing many more. It will be a visit you won’t forget!

Rare book viewings are by appointment only during the hours of 10:30 a.m. until 3 p.m. Monday through Friday, subject to availability. For an appointment, call (847) 835-8201.

©2014 Chicago Botanic Garden and my.chicagobotanic.org

The Love Lives of Orchids

Thu, 02/13/2014 - 11:00am

This year, Valentine’s Day has special meaning for us at the Chicago Botanic Garden—it’s opening night for our first-ever Orchid Show! With that in mind, we’ve gathered a few stories about how orchids will do just about anything to attract a pollinator…along with a few soundtrack suggestions…

 A spray of blooming orchids, which resemble tropical spiders.

A spray of Brassia rex “spider” blooms await pollinating parasitic wasps.

She Loves You, Yeah, Yeah, Yeah
With a love like that, you know you should be glad, yeah, yeah, yeah.

Granted, a little makeup can work wonders on date night. But the spider orchid, Brassia, takes things even further in order to attract an insect: it makes itself up to look like a pollinator’s favorite food.

The orchid’s flower has developed the color and shape of a large tropical spider. But it’s not trying to attract the spider—no, that would be too obvious. Rather, scientists think that the orchid attracts a wasp that hunts the spider as potential food for its own larvae. Thus the wasp is fooled into landing on the flower—and picking up its pollen—while hunting. So cheeky!

 Closeup of a hammer orchid.

A hammer orchid (Drakaea glyptodon) awaits its next suitor. Photo by Mark Brundrett.

I’ve Just Seen a Face
Falling, yes I am falling, and she keeps calling me back again.

When the hammer orchid (Drakaea species) set its sights on the Thynnid wasp as a pollinator, it didn’t mess around: it developed a flower that looked like a lady wasp and a scent like the female pheromone used to attract a male.

In nature, the lady wasp climbs to the top of a plant and awaits a male—who recognizes the pheromone, flies over, plucks her off the plant, and mates. The hammer orchid’s flower mimics the look of the waiting female, but when the male flies up and lands, his weight throws him into the back part of the flower that carries the pollen—with the force of a hammer strike. He realizes he can’t carry her off, and heads off for another orchid, where the next hammer throw deposits the pollen he’s already carrying.

 Closeup of Coryanthes speciosa, showing bucket and drip of nectar.

Coryanthes speciosa by Dalton Holland Baptista [CC-BY-SA-3.0 ], via Wikimedia Commons.

A Taste of Honey
I will return, yes I will return. I’ll come back for the honey and you.

The right perfume can change a man. The bucket orchid, Coryanthes speciosa, has singled out the male euglossine bee for a pollinator. The flower produces a highly scented perfume that attracts swarms of male bees—which know that it’s a female’s favorite and rub it all over themselves. But step carefully, gentlemen: it’s a slippery slope into the flower’s bucket, where you’ll have to swim to the exit—picking up the flower’s pollen on your way out. On the plus side: you’ll smell great to that female bee when you finally find her!

(Check out more on orchids fooling mating bees with this famous video: http://www.youtube.com/watch?v=-h8I3cqpgnA.)

 A spray of fuchsia-colored, ruffled-petal blooms.

Oncidium Sharry Baby ‘Sweet Fragrance’ has dancing skirts and chocolate fragrance.

I’m Happy Just to Dance with You
Before this dance is through I think I’ll love you too. I’m so happy when you dance with me.

The most fashion-conscious orchids (Oncidium) are called “Dancing Ladies,” because of their wonderfully ruffly petals that look like the spread skirts of dancers. The most prominent petal on the orchid’s flower—called a lip, or labellum—can be ruffled, spotted, hairy, pouched, or fringed. All are features meant to attract a pollinator into using it for a miniature landing platform (the lip is much sturdier than this bloom’s delicate design lets on), drawing it in close to the center column that holds pollen.

Oncidium Sharry Baby ‘Sweet Fragrance’ is the supermodel of dancing ladies—and did we mention that it just happens to smell like chocolate? Most fragrant in the late afternoon to early evening, this is truly an orchid that knows the way to a woman’s heart.

 The incredibly long nectar spur of Angreacum sesquipedale.

Angraecum sesquipedale ‘Flambouyant’ x var. bosseri ’Lisa’—pollinated by the light of the moon.

Bonus Track! Mr. Moonlight
And the night you don’t come my way, Oh I pray and pray more each day, ’cause we love you, Mr. Moonlight.

At the Orchid Show, which opens this weekend, you’ll get introduced to Darwin’s orchid, or Angraecum sesquipedale, an orchid with an elegantly long nectar spur. When Charles Darwin first described the orchid in 1862, he postulated that it must have a pollinator with a long tongue, though none was known at the time. The mystery persisted for 40 years until a hawkmoth with a fantastically long 12- to 18-inch proboscis—a straw-like tongue—was finally identified. The moth flits from flower to flower at night, reaching deep into the brilliant white flower’s spur in a split second—all by the light of the moon.

With thanks and apologies to the Beatles, who performed for the first time in America on TV’s the Ed Sullivan Show 50 years ago this week. Since then, generations have grown up knowing the words to their love songs.

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Creating a World of Wonder

Tue, 02/11/2014 - 2:51pm

In three days, the Chicago Botanic Garden will present its first ever Garden-designed Orchid Show.

 Gabe Hutchison in the greenhouse.

Horticulturist Gabe Hutchison attaches orchids to their new habitat: the orchid trees in the Tropical Greenhouse.

Looking at it now, the winter of 2014 has not been an ideal year to tackle an in-depth and delicate project of this scale. A winter season with near record snowfall and record low temperatures has posed plenty of challenges in getting warmth-loving tropical orchids to the snowy, freezing Midwest, and securely into the Regenstein Center Greenhouses. Single-digit and sub-zero temperatures have been putting the Garden’s horticulture staff on heightened concern to protect these orchids in their various stages of buds and blooms. The transfer and well-being of more than 10,000 orchids has been a well-orchestrated undertaking shared by Garden staff (especially horticulturist Sharon Nejman) and the vendors who packed and sent the trucks.

 A metal cage holding branches is suspended from the greenhouse's glass ceiling.

A combination of metal cage and hazelnut (Corylus) tree branches creates the perfect framing to place an orchid display.

Beginning just a month ago, the Garden’s horticulture staff began a tear-down of Wonderland Express, immediately switching gears to the equally large endeavor of creating and setting up the Orchid Show. Existing Greenhouse beds have been modified to make room for impressive structures, and organic materials host epiphytic orchids of different genera. Presenting these impressive splashes of colorful orchids in a nontraditional display comes with some scalp-scratching challenges.

More than 10,000 orchids find homes on a variety of structures designed and fabricated by Garden staff.

Working closely with Orchid Show designer and horticulturist Brian Barker, I had the shared task of designating orchid choices based on the length of bloom life and needed care, while trying not to limit creativity and whimsy. My experience in maintaining private orchid collections for individuals and overseeing the care and aesthetics of three preexisting cork bark orchid “trees” in the Regenstein Greenhouses opened a role in the planning and installation of the show for me.

 Pine bark lines the walls of a hallway, and vines and creepers stretch across the ceiling.

The entry to Nichols Hall transforms into an incredible tropical gateway.

In June 2012, when first presented with the challenge of building a new exhibition—an orchid show—we discovered logistical riddles we hadn’t considered being thrown at us. Along the way, new visions and ideas were presented, and have become focal points of the show during planning. Now we are here at the installation stage, with our materials, wondering,”How do I get hundreds of this particular orchid in these two or three colors to hang sideways or upside down over the visitors’ heads (sometimes way over), and keep the flowers happy?” Or, “How do we water a structure like this, and how do we do it efficiently?” Or, when we discover orchids are not happy in a location, how do we replace them quickly and in a way that doesn’t jeopardize the aesthetics of this visual centerpiece?

 Two staffers gently weave orchids and roots into a metal cone framework.

Teamwork is critical! Leah Pilon and Aysa Pogue gently weave orchid roots into a display frame.

Together, the horticulture staff is figuring out the solutions to these in-no-way-little challenges as they are presented, and in the process, admiring the great orchid creations that are coming together around us with pride. With every step, we are enjoying Brian Barker’s visions with the awe they deserve, knowing that in a few more days, we will be able to step back and appreciate our final creation and see it in the eyes of a Garden visitor.

Winter white blankets the ground outside, but inside, the Greenhouses are alive with jewel tones.

From the moment the public enters Nichols Hall, crossing through Joutras Gallery and the entrance into the Greenhouses, our goal is to present an experience of grandeur, a lush habitat of color, and a mix of curiosity and wonder.

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Roses Are Red…

Mon, 02/10/2014 - 1:29pm

A dozen red roses say, “I love you,” but horticulturists at the Chicago Botanic Garden transcend tradition on Valentine’s Day. Read on for thoughtful, unusual, and homemade floral gift ideas.

 Delphinium in bloom.

Delphinium (Delphinium elatum ‘Royal Aspirations’)

Spouses can evoke their wedding day by combining flowers from their ceremony and reception into a Valentine’s bouquet, said Tim Pollak, outdoor floriculturist at the Garden. Tim would use sweet peas, freesias, and delphinium for a nostalgic, sweetly scented gift. Tropical flowers from spots such as Hawaii and Florida can conjure up memories of a romantic getaway.

Seeking a seasonal and local bouquet? Consider some of the dormant shrubs growing in your yard, said Heather Sherwood, senior horticulturist. A little advance planning can produce beautiful flowering branches from early-spring flowering shrubs, such as forsythia. Prune 2- to-3-foot lengths, put them in a container filled with water, and place them in a sunny location. The bright yellow forsythia flowers will begin blooming in roughly a week, while other shrubs may take longer. Heather likes mixing the forsythia with silvery pussy willow. You can tie the bunch with a big red bow and attach a homemade card with a big “I Love You” on it.

 Forsythia in bloom.

Forsythia (Forsythia ‘Northern Sun’)

Flowering plants such as kalanchoe, African violets, cyclamen, and azaleas can bloom for weeks and serve double duty in the summer garden. Tim Pollak likes giving indoor blooming plants to friends and family, because they serve as a lasting reminder.

Want to remember Mom on Valentine’s Day? Fragrant and long-lasting carnations can denote love for a mother, says Jill Selinger, manager of adult education. Delicate, blooming four-leaf clovers (Oxalis tetraphylla) can boost a friend who’s down on his or her luck. The clover leads into St. Patrick’s Day and can be transplanted outside in summer. Primroses, symbols of young love, can be put in the garden in spring and come back year after year.

 Oxalis tetraphylla (four leaf clover).

A lucky gift: four-leaf clover (Oxalis tetraphylla)

Considering a recipient’s color preferences can create a Valentine’s bouquet that’s in harmony with their decor, said Jacob Burns, curator of herbaceous perennials. “Not that many people have red and pink rooms,” he said. “If I had to pick, I’d want a simple bouquet of ranunculus, anemones, or tulips.”

Presentation adds thought, meaning, and beauty to a floral gift, agrees Selinger. Gardenias, symbols of secret love, can be floated in a bowl, filling a room with their intoxicating scent for several weeks. How about placing a posy or small violet plant in a souvenir mug from a special date or trip? Remember, roses are red, violets are blue…

 Orchid in bloom.

An unusual and stunning gift: this lady slipper orchid (Cypripedium calceolus)

Orchids can make an exotic, very feminine Valentine’s gift, and some varieties, such as Phalaenopsis, are very elegant and easy to grow, notes Sherwood. Plant biology graduate student (and our informal orchid spokesperson) Anne Nies recommends adding red and pink orchids—her favorite flower and research subject—into a mixed bouquet to add color, fragrance, and texture. “You can also make a bouquet or arrangement out of orchids alone; they have a wide variety of shapes and sizes,” said Nies. Among her recommendations are red Cattleya with their spicy scent, and mysterious-looking, blood-red Paphiopedilum, or lady slipper orchids. She also likes one of the stars of our upcoming Orchid Show: Oncidium ‘Sharry Baby’, which smells like another Valentine’s favorite—chocolate!

Still can’t decide what flowers to give for Valentine’s Day? How about all these flowers throughout the whole year? A gift membership to the Garden affords free parking, discounts, and blooms in all four seasons. Loved ones receiving a tribute gift will get a beautiful notecard from the Garden acknowledging the donation made in their honor. How’s that for a very special Valentine’s card?

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Photosynthesis Made my Rock Candy

Fri, 02/07/2014 - 8:30am

While you are inside wondering if winter will bring another chilling polar vortex, or six feet of snow, or 40 degrees and rain, join me in contemplating the sweetness of plants.

 Burgundy leaves of the Bull's Blood sugar beet.

The common sugar beet, Beta vulgaris (this one is cultivar ‘Bull’s Blood’), is the source of our refined white sugar—not sugar cane!

All sugar comes from plants. ALL of it. Plants are the only thing on earth that can make sugar, and plants are made of sugars. Even plant cell walls are composed of a substance called cellulose, which is a compound sugar. Sugars from plants are the basis of our food chain.

Our favorite dietary sugar, sucrose, comes from the juices of sugar cane or sugar beets, which are boiled until the water evaporates, leaving the sugar crystals we all know and love as table sugar. Now that you know where your candy comes from, let’s use some sucrose to make a treat.

How to Make Rock (Sugar) Candy

Rock candy is pure, crystallized sucrose, and you can make it at home. This will take one to two weeks, so get started now if you want to give it to someone special for Valentine’s Day.

You will need

  • 1 cup water
  • 3 cups sugar, plus about a spoonful extra to coat the skewers
  • Food coloring (optional)
  • Flavoring (optional)
  • Bamboo skewers
  • Very clean, heat-resistant drinking glasses or glass jars (like Ball or Mason jars)
  • 2 clothespins
 Tools and ingredients for making rock sugar candy laid out on the kitchen counter.

All the ingredients for the solution are assembled and ready to go. Note: the flavoring pictured here is not the best to use, because it contains alcohol. Use an essential oil for better results.

Directions

First, assemble the hardware. Cut the bamboo skewer to 6–8 inches, depending how long you want it. Attach two clothespins to one end. They will rest on the edges of your glass, suspending the skewer straight down in the glass without allowing it to touch the sides.

Cut a piece of paper towel with a hole in the center. This will go over the top of your glass to prevent dust from settling on the surface of the solution. Remove the paper towel and skewers; you’ll reassemble this after you’ve poured the solution in the glasses.

 Glasses and skewers set up for making rock sugar candy.

Suspend the skewers using one or two clothespins as pictured here, and be ready to cover loosely with a piece of paper towel like the glass shown in the middle.

Important tip: The directions I followed (from a reputable source) instructed me to moisten the end of the skewer with water and roll it in some sugar to “seed” the formation of new crystals. When I tried this, the sugar crystals all fell off the skewer the minute I put them into the solution. Crystals will not grow on a bare skewer. What DID work was dipping the skewer into the sugar solution (which you are about to make) and then rolling it in sugar. This kept the tiny sugar crystals stuck on the skewer and allowed larger crystals to grow.

Making the sugar solution. Pour 1 cup of water in a saucepan and heat to boiling. Then turn the heat to low. You do NOT want to boil the water after you have added sugar, or you will make a syrup that is stable and will not yield crystals. Add the 3 cups of sugar gradually, and stir to dissolve. Push down any crystals that form on the sides of the saucepan during heating to dissolve in the water. This takes some time! Your final solution should be clear—not cloudy at all—and you should not see any crystals.

 Green-dyed rock sugar candy solution in a Mason jar.

You can choose to pour the liquid into two small glasses or one larger jar.

If you want to color or flavor your candy, now is the time. Add 2 to 3 drops of food color and/or 1/2 tsp of food-grade essential oils (like peppermint), and stir in thoroughly. Avoid using alcohol-based extracts like the bottle you see pictured in the blog. I’m not sure if this caused a failure during one of my trials, but I can say with certainty that I had better results when I used a flavoring oil.

Dip the end of the skewer a few inches into the solution and remove. Let the excess sugar water drain into the pot, and then roll the sticky end in dry granulated sugar to coat evenly. Set aside.

Pour the warm solution into the glass container(s), and fill to the top. With this recipe, you will get about 3 and 1/2 cups of solution, which will fill one jar or two glasses. You can scale the recipe up if you want more.

 Rock sugar candy skewers.

After about eight days, you can see the cube-shaped sugar crystals on these skewers. The longer you leave them in the solution, the larger the crystals will grow.

Carefully lower the sugar-coated skewer into the solution, holding it in place with the clothespins. Cover lightly with the paper towel and place it in a safe location where nothing will bump it or land in it for at least one week—two weeks if you want larger crystals. Do not totally seal your glass or jar. The water needs to evaporate for the sugar to come out of solution and crystalize on the skewer. If all goes well, then over the next week you will see large crystals forming only on the skewer.

Got candy? Remove the skewer and drain the syrup. Eat immediately, or allow to dry, wrap in plastic, and save for later. Now that is what I call cultivating the power the plants!

One more thing: You can use string instead of a stick. Tie a small weight on the bottom and tie the top to the a pencil balanced on top of the glass so that the string hangs in the liquid.

 A weighted string coated in rock sugar crystals.

The string was weighted with a metal nut so it would sink into the solution.

While you are waiting for your sucrose to crystalize, let’s contemplate where it came from.

Sugar from Plants

You probably know that plants harness energy from the sun to convert water and carbon dioxide into sugar and oxygen in a process we call photosynthesis.

 diagram of a plant showing carbon dioxide and light energy entering the plant leaf andwater entering through the roots, while glucose is formed in the leaf and oxygen is released into the air.

This basic diagram shows photosynthesis in action.

The product of the reaction is a sugar called glucose, which is chemical energy that a plant can use to build plant cells and grow. The formula looks like this:

6CO2 + 6H2O (+ light energy) C6H12O6 + 6O2.

Translated, it means that inside plant cells, six carbon dioxide molecules and six water molecules combined with energy from the sun are converted into one sugar molecule and six oxygen molecules.

Glucose molecules are combined to form more complex sugars. Sucrose, or table sugar, has a molecular formula C12H22O11.  It looks like two glucose molecules stuck together, but missing one oxygen and two hydrogen atoms (or one water molecule).  

 Sucrose molecule.

This sucrose molecule looks good enough to eat!

 Sugar cubes.

Just kidding. It looks better in normal scale.

As I mentioned earlier in this post, plants are the only thing on earth that can make sugar. Through modern chemistry, food scientists have figured out how to extract and modify plant sugars more efficiently. They have also developed different kinds of sweeteners, because the food industry is always striving to develop less expensive ways to satisfy our craving for sweets, as well as supply alternative sweeteners for different dietary needs. Some sugars you may see on food labels include dextrose (which is another name for glucose), sucrose, fructose, high fructose corn syrup, maltose, and sucralose. All of these “natural” sweeteners were processed from plants, even though they do not exist without help from a laboratory.

Have you noticed that all of these sugars, including the sugars in plant cell wall structures, have names that end in “ose”? That is no accident. The suffix “ose” is the conventional way chemists identify a substance is a sugar. Go ahead, share that information at your next party as you consume goodies made from plant sugars. Having some chemistry facts at your sticky fingertips makes you sound smart while you’re nibbling on sweet treats.

 Fresh produce in a wicker basket.

Yum!

Please enjoy sucrose crystals responsibly, as part of a balanced diet that includes forms of sugars closer to their origins. (In other words, eat fruits and vegetables, too.) And remember to brush your teeth!

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Undercover Science

Tue, 02/04/2014 - 11:33am

David Sollenberger is building a time machine. He is capturing the prairie of today so that it can appear again in the future.

Moving about the Dixon National Tallgrass Prairie Seed Bank Preparation Laboratory at the Chicago Botanic Garden, Sollenberger works with a combination of everyday and high-tech tools. Brown paper bags filled with seeds scatter the windowsill, while metallic seed-drying machines with dials, switches, and gears line a wall. A long, stainless steel work table in the middle of the room is often surrounded by a team of focused volunteers.

The pulse of this active lab is the heartbeat of the Garden’s Seed Bank — a living collection of plant seeds reserved for potential future plantings.

 David Sollenberger in a large, walk-in freezer room. He's wearing winter gear and a knit cap.

David Sollenberger files a seed packet in the Garden’s vault.

“Tallgrass prairie is a globally threatened ecosystem, and we’re working hard to preserve what is left,” said Sollenberger, Seed Bank manager at the Garden.

While the prairie was once visible from horizon to horizon in the Midwest, it is now reduced to small, disconnected pieces of land that struggle to survive. While many of those remnants are protected from threats such as continued development, they remain fragile due to their disconnect from other natural areas and impending threats such as climate change. Seeds preserved in a seed bank can be used to create new habitat, or used to enhance existing areas in the future.

Prairie Protocol

The Garden began its Seed Bank as a part of an international effort led by the Millennium Seed Bank and the Bureau of Land Management’s Seeds of Success program. Together with partners from across the globe, they banked 10 percent of the world’s flora by 2010. Then, the Garden chose to continue to save seeds regionally, along with Seeds of Success.

 A view through the window into the prep lab, where staff and volunteers are sorting seeds.

Peek into the Seed Bank Preparation Laboratory on your next stroll through the lobby of the Daniel F. and Ada L. Rice Plant Conservation Science Center to see the seed savers in action!

During warmer months, Sollenberger and a small group of contractors individually go into the field to gather seeds from a list of 544 target species. Each year they visit parts of the 12 interconnected ecoregions of the tallgrass prairie system, including wetlands, meadows, and prairies. Although there are more than 3,000 prairie species in the Midwest alone, Garden scientists identified a critical list of plants to focus on that are important species within the habitats they represent.

Following collection protocols established by the Millennium Seed Bank, they try to collect seeds from at least 50 plants in a population, which allows them to capture up to 95 percent of the population’s genetic diversity. When they do, they can share a section of the collection with national seed banks for backup storage.

However, due to the small size of many prairie remnants, there are sometimes fewer than 50 individual plants of a species in a population. In that case, Sollenberger explained, they collect along maternal lines, which means that seeds are collected separately from each plant. This results in a systematic representation of the genetic diversity of a species within a population.

Time Traveling

 Closeup of a volunteer's hand moving seeds from a bulk pile to a smaller pile with tweezers.

Seeds are counted for packaging.

During winter in the laboratory, the collected seeds are first sorted and cleaned. It can be a meticulous and time-consuming process. But Sollenberger uses a number of techniques to add efficiency.

To sort viable seeds (those that hold an embryo inside) from those that are empty hulls, the team loads a batch into a large, clear cylinder with a motor-run fan called a column blower. When the seeds are blown about within the container, the heavier ones ­fall to the bottom while the lighter ones rise to a top shelf and can be disposed. They also use an X-ray machine to look inside a sample of seeds to determine what percentage is filled and potentially viable.

For seeds from the Aster family, goldenrods, and milkweeds, the team must first remove the silky hairs, or pappus. First, seeds are rolled on a rubber mat to loosen the pappus.

Then, they are run through a typical Shop-Vac that separates the pappus from the seeds. By using this process, “we’ve been able to improve the quality of the seeds,” noted Sollenberger. “It decreases the volume of seeds so there is less packaging, which allows for more space in the seed vault, and it improves our ability to separate light, non-viable ‘empty’ seeds and other light extraneous plant materials (chaff) from heavier, potentially viable ‘filled’ seeds.”   

 A hand with paper towel rolls seeds on a baking mat.

Seeds are rolled on a mat to remove the pappus.

 A hand pulls seed pappus "lint" from the shop vac's filter.

A filter inside the vacuum separates the pappus from the seed.

Throughout this process, seeds are stored in the dryers. There, they are dried to 15 percent humidity, which is critical for their successful storage at minus 20-degrees Celsius. Using this process, the majority of Midwestern prairie seeds can be stored for up to 200 years.

Early in his career, David Sollenberger helped to build the Garden’s Dixon Prairie. Learn more about his work. Bring your own seeds to our annual Seed Swap, Sunday, February 23.

Another few months of seed sorting await Sollenberger and his team, but he is already thinking of spring. “We take a breath in springtime when everyone else is busy,” he chuckled. It is then that he likes to visit  McDonald Woods to soak in the beauty of a truly native natural area, before heading out in the summer to collect the next batch of seeds.

©2014 Chicago Botanic Garden and my.chicagobotanic.org

How to Build an Orchid Sphere

Sat, 02/01/2014 - 8:03am

Do you remember the orchid spheres that were featured in the Tropical Greenhouse during Wonderland Express in 2012? I always wondered, “How did they do that?” and tried to examine them after they were already created.

Orchid Sphere

Orchid Sphere in Wonderland Express

When I heard they were making ten of them for the Orchid Show, I asked horticulturist Elizabeth Rex to show me (and you) exactly how they do it. She and the other talented horticulturists constructed them from up to 150 light and dark purple Phalaenopsis orchids, spending six to eight hours per sphere. I’m not sure any of you will be creating your own orchid spheres at home, but if you do, Rex tells me they will last up to six weeks with proper care. That’s good, because the Orchid Show will be open from February 15 to March 16.

Keep a look out for other fantastic orchid creations including arches, chandeliers, and trees. I wonder how those were made…

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Culture, Climate, and Rubber: Reflections on Xishuangbanna

Thu, 01/30/2014 - 1:48pm

Why go all the way to China to talk about climate change, when there are plenty of conversations to have here in the U.S.?

MAP

Xishuangbanna shares border land with Myanmar and Laos.

Returning from a week at Xishuangbanna Tropical Botanical Garden for their Third International Symposium focused on “The Role of Botanic Gardens in Addressing Climate Change,” I’m struck both by the complexity and difference of the Chinese culture from ours, and by how many of the same challenges we face.

These challenges are global, and to solve them, we need to take a global perspective. Though the United States and China are in very different stages of economic development, we are the two leading emitters of greenhouse gasses—and we must lead the way in reducing our impact.

Xishuangbanna Tropical Botanical Garden is located near the village of Menglun in the Dai Independent Prefecture of Xishuangbanna in Yunnan province in China, which shares 619 miles of borderland with Myanmar and Laos.

The area is a lush, tropical paradise, and does not seem at all affected by climate change, but it is a concern: the tropical areas of China—only 0.2 percent of its total land mass—represent more than 15 percent of the biodiversity in the country.

 Peach-colored epiphytic orchids wrap their roots around a branch.

Native epiphytic orchids in Xishuangbanna

 A view up into an enormous strangler fig.

Strangler figs and other enormous tropical trees create a high canopy above the forest floor.

Biogeographically, Xishuangbanna is located in a transitional zone between tropical Southeast Asia and subtropical East Asia, so the climate is characterized as a seasonal tropical rain forest, with an annual average temperature of 18-22℃ (64.4-71.6℉), with seasonal variation. At about 20 degrees north of the equator, it is just on the northern edge of what is considered the tropics, though it does follow the rainy/dry seasonal patterns—May to October is the rainy season and November to April is the dry season. During my stay, they were experiencing weather somewhat colder than usual, with nighttime temperatures in the upper 40s and daytime temperatures in the low 60s. Earlier in the month, it was only in the upper 30s, but still far warmer than here in Chicago!

 A view of the Mekong River Valley

A view of the Mekong River Valley

The vistas were breathtaking. This is a mountainous region, covered with lush tropical and semitropical plant life, wild bananas, lianas (long-stemmed, woody vines), tualang (Koompassia), and Dipterocarpaceae trees—some of which are more than 40 meters tall!

When I arrived on January 10, I noticed that many of the mountains were covered with what looked like vast areas of rust-colored trees. Rust-colored, I learned, because of a recent cold snap that damaged the leaves of the local monoculture: rubber trees.

 View of Menglun Village, China.

A view of Menglun Village from Xishuangbanna Tropical Botanical Garden. The Mekong River tributary is in the foreground; rubber trees cover the hills in the background.

Rubber is the new thing in Xishuangbanna. Over the past 40 years, rubber trees have been bred for cooler climates, so production has moved northward from the true tropics to areas like Xishuangbanna. This has had enormous benefits for the local Dai population. Subsistence farmers in the past, they have been able to substantially improve their town infrastructure and their standard of living. But as rubber plantations expand, the ecosystem here is increasingly threatened, with only scattered fragments of untouched tropical forest left. While not directly related to climate change, the impacts of rubber were extensively discussed among conference attendees, because climate change exacerbates other environmental stresses like the fragmentation caused by the rubber plots.

 The bark is stripped from a rubber tree. The sap is gathered and turned into rubber.

Not originally a local crop, rubber has become a primary crop of the area.

This seems to me to be a constant tension globally—the competing interest between economic development and conservation—and we’re still looking for the balance. In the United States we continue to have this debate, but around fracking and oil production rather than agriculture. Economic growth at the expense of the environment seems reasonable until we suddenly reach the point where the ecosystem services we depend on to live—clean water and air, food, medicine, etc.—are suddenly in jeopardy, either through direct human action or indirectly though other anthropogenic causes. And that brings us back to climate change.

Climate change is not an easy or comfortable topic of conversation.

Climate change is scary, politically (though not scientifically) controversial, abstract, and easy to ignore. It challenges us as individuals and organizations to rethink our priorities and choices, and to recognize that we may have to change the ways we do things, and how we live our lives, if we are to really address the problem. It is for these reasons, I think, that it generally is not a topic that botanic gardens have focused on when we develop our education or outreach programs. Internationally, gardens are finally beginning to work towards changing that, by building staff capacity to teach about climate change and by integrating climate-change education into existing and new programs.

Where better to understand and communicate how climate change will impact the natural world than at a botanic garden, where we can actually observe its impacts on plants?

The purpose of the conference was to bring together a group of international botanic garden researchers and educators to share their activities around climate change and to think broadly about how botanic gardens can and should use their resources to support movement towards a more sustainable society, as well as how we develop mitigation and adaptation strategies both for conservation purposes and human survival.  Almost 20 countries were represented at the conference, though disappointingly, I was the only U.S. attendee.

 Group shot of a handful of conference attendees around a low table, eating dinner.

Many of our dinners were in the amazing local Dai cuisine—a real treat!

My particular area of expertise is environmental education, so experiencing tropical ecosystems directly, which there obviously isn’t the opportunity to do here in the Midwest, truly amazed and inspired me, and renewed my passion for communicating the wonder of nature to all the audiences that the Chicago Botanic Garden serves. It also drove home the real challenge we have to protect these ecosystems as the climate changes. In our discussions and in the sessions, we really focused on looking for solutions—action items—immediate and long term, that we as researchers and educators, and collectively as botanic gardens, could do to make a difference. 

After dozens of sessions on research and education (everything from paleobotany to using neuroscience to better tailor climate- education messaging—really fascinating!), and discussion in targeted working groups, we produced the Xishuangbanna Declaration on Botanical Gardens and Climate Change

In the education group, we took a multifaceted approach to the challenge—to really make a difference we need to increase our own capacity to communicate about climate change, more effectively engage our visitors in that discussion, and reach out to political, social, religious, and economic leaders to support the development of policies and practices that address the impacts of climate change on plants and society. It sounds like a herculean task, but if we each take one part of the job, I believe we can do it together. For example, here at the Chicago Botanic Garden we’ve stopped selling bottled water, use electric hand dryers rather than waste paper, are committed to LEED (Leadership in Energy and Environmental Design) certification for new building construction, and continue to look for other ways to reduce our carbon footprint.

It’s important that as institutions, gardens begin to “live the message” by implementing appropriate sustainability policies at our own institutions.

The entire declaration provides what I think is a concise, yet comprehensive, outline of how botanic gardens can use their strengths to address the very real challenge of climate change: through education, by taking meaningful steps to engage all our audiences; through research, by better understanding how climate change is affecting our environment; and through conservation, by protecting biodiversity and the other natural resources on which we depend.

 Chinese temple.

Highlights outside the symposium included visiting this temple and the local market, and taking a canopy walk.

 Women at market with giat 9-foot stalks of harvested sugar cane.

Sadly, raw sugar cane available in the local market would not fit in my suitcase to go home.

 The author standing at a joint in a canopy walk path.

The signs on this walk warn that there is no turning around on the path. It’s not hard to see why.

 A view back across the canopy bridge reveals how high the path is in the trees.

SO high up in the canopy, but the hills are still taller.

While there is no one “one size fits all” agenda or program that will work for every garden or every individual, I think there is a common approach that can be taken—gardens collectively need to develop a consistent message and mobilize our networks to communicate about climate change and its impacts. Gardens, along with our members, visitors, and patrons, have the capacity and the opportunity, if we will only take it, to inspire the broader community to act now for a better future. Join us.

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Gardening and Autism

Fri, 01/24/2014 - 10:22am

Horticultural therapy has proven benefits for individuals with autism.

The integration of horticultural therapy and therapy gardens within health and human service agencies has grown exponentially in recent years. In senior centers, gardening and garden spaces are used to help with fine motor skills, socialization, and ambulatory movement. In veteran’s hospitals, gardening is used for exercise, vocational training, and education.

There is one population that, in my opinion, receives the most benefit from the incorporation of gardens and horticultural therapy in daily services. That population is found in the organizations, schools, institutions, and training centers that serve individuals on the autism spectrum.

 Rimland horticultural therapy garden

Flowers like butterfly gaura (Gaura lindheimeri) can be observed with quiet fascination.

Autism spectrum disorder (ASD) and autism are general terms for a group of complex disorders of brain development. These disorders are characterized by difficulties in social interaction, verbal and nonverbal communication, and repetitive behaviors.

In the spring and summer of 2013, I worked with two organizations and schools and led weekly horticultural therapy sessions in their outdoor gardens. We observed many benefits when engaging both children and adults on the autism spectrum.  For today, I’ll discuss three primary benefits I observed: quiet fascination and stimuli reduction, the ability to follow direction, and tactile sensory integration.

The first benefit has to do with the physical garden space itself. I observed a sense of relief displayed by the participants when in the garden space. Gardens can serve as a welcome break from the classroom or facility environment, for clients and staff, and provide a space for “quiet fascination.”

Kaplan, Kaplan, and Ryan state that quiet fascination can “come from the setting itself, from the sound patterns, the motion, the intensity of forms and color” (69). An evaluation was designed at the beginning of the season and results demonstrated that 72 percent of participants were observed having slightly to significantly less anxiety when engaging in the garden and with horticultural therapy activities in comparison to other daily tasks.

Installing an edible garden with a client from Rimland non-for-profit organization

Installing an edible garden with a client from the nonprofit Rimland Services

The second benefit was the participant’s ability to follow directions with multiple steps. Individuals with autism spectrum have greater difficulty shifting attention from one task to another or changing routine. During horticultural therapy activities, participants would be asked to follow steps in order to complete the activity. For example, when planting the garden, instructions were to dig a hole, take the plant out of the plastic, place it in the soil, gently push the soil back around the base, and repeat. The hand-over-hand technique was often used to aid in the task and 77 percent of participants were observed being slightly to significantly more responsive to a multiple-step process and able to repeat without instruction.

The last benefit dealt with sensory integration with a focus on the tactile system.  When engaging participants in garden activities, dysfunction in the tactile system prompted actions such as withdrawing when being touched or helped, and overall avoidance of getting one’s hands dirty. With assistance from facility staff, we worked with participants to slowly introduce the sensation of soil, plant material, and water to participants. Each week, we’d encourage participants to touch, rub, and smell numerous plants with interesting textures and aromas along with the soil and water. As the weeks went on, it was observed that participants were not only less reserved but also were fascinated with the soil and plants.

rimland 2013jun07_3279

With assistance from staff and horticultural therapist, participants were encouraged to plant with their own hands.

The integration of gardens and garden-based activities in health and human service agencies is expanding year after year. If you know an individual or organization who could benefit from a garden, share some of the information you learned in this blog. It’s often in those conversations, filled with factual evidence and interest, that new ideas are planted and grown.  

Source: Rachel, Stephan Kaplan and Robert Ryan. With People in Mind: Design and Management of Everyday Nature. Washington D.C.: Island Press, 1998. Print.  

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Undercover Science

Mon, 01/13/2014 - 2:09pm

As winter winds disperse prairie seeds and fragrant pinecones tumble down, Bianca Rosenbaum is busy collecting. As much as she would love to forage through the seasonal natural materials outside of her office at the Chicago Botanic Garden, that’s not what she is after these days. Rather, she is gathering data.

 Bianca Rosenbaum at her desk.

Rosenbaum manages data from her colorful office.

Seated at her desk in the Daniel F. and Ada L. Rice Plant Conservation Science Center, Rosenbaum taps away at her computer’s purple keyboard. The Garden’s conservation science information manager is busy finishing her masterpiece—a searchable collection of visual and numeric plant data. The new product is a one-stop-shop for information previously housed in three separate databases and accessible by few.  

Named the Science Collections database, the project centralizes the Garden’s data on seed collections, herbaria, and plant DNA. For the first time, the information is accessible online by anyone from international scientists to curious children.

“We saw this great opportunity to combine our databases and be able to cross reference collections,” she said. “It’s been very exciting. It’s one of my biggest, most challenging projects. It feels extremely rewarding.”

Since she began working at the Garden in 2002 as an expert in Microsoft Access, Rosenbaum has overseen the safekeeping of the data in all three of these areas as well as other Garden research collections. In just a few years, the way the information was stored and managed became outdated as technology progressed. She was thrilled with the opportunity to advance its management system.

When the Science Collections project began four years ago, one of her first tasks was to identify data used by all three databases and merge them into common tables to eliminate repetition and guarantee standardization. The result was a complicated set of linked tables that comprise the structure for the final product—called a relational database.

 Collections database search results screen.

A search in the Science Collections database reveals merged information about each species.

She then merged all of the data on each species. Now, rather than going to different databases to find all of the herbarium, seed, and DNA information recorded about a plant, it can be found in one place. 

Rosenbaum then worked with the Garden conservation GIS lab manager, Emily Yates, to add a spatial component to the data by mapping plant locations, which are linked to each collection record. Lastly, she built a web page to serve as a portal from the database to the internet.

Data from the Garden’s Nancy Poole Rich Herbarium are mainly visual, with 17,000 images of pressed plants alongside notes about location and related details. Information from the Dixon National Tallgrass Prairie Seed Bank includes high-resolution images of seeds from 2,600 species. The program also includes notes about whether the Garden houses material that may be accessed for DNA sampling for a given plant. The records include information on all classifications of regional plants, and some international. Only those labeled as threatened or endangered are not shown on a map.

 Page from the herbarium with Liatris aspera sample and data.

Liatris aspera (Herbarium acc. 4439)

“This job has totally changed my outlook,” said Rosenbaum, who had no real interest in botany before coming to work at the Garden. “I feel very fortunate that I’ve been here and I’ve been able to combine both the tech world and the environment.”

As a child, she grew her love of technology with encouragement from her parents—an engineer and electronic assembler. She went on to study computer engineering in college, and gained work experience with coding and data management. As a Garden employee, she has coupled those computer skills with a new set of plant-related skills. She is now comfortable with plant names, discussing scientific processes, and even growing her own vegetable garden at home.

Although she spends much of her work day glued to her computer screen, Rosenbaum does find time to look out her window, or step outside to connect with her subject matter. “I think it’s very easy to not notice this world when you are in the tech world, or the business world,” she said. “Now I can connect the two and know what it is I am working on and see what I am working to protect and conserve.”

Rosenbaum often strolls the Waterfall Garden in warm months, but she especially looks forward to spending time in the peaceful Dixon Prairie.

The recently launched database is now open to exploration at www.sciencecollections.org. Check back in coming months for Rosenbaum’s forthcoming addition of advanced search options. 

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Make a Grapefruit Bird Feeder

Tue, 01/07/2014 - 12:50pm

My daughters love fresh grapefruit, and winter is the season when this fruit is at its best. Instead of throwing away the rind, we decided to make a bird feeder. This is a great winter project for the family.

 The supplies needed for the project.

The grapefruit sections have been cut and eaten; the rind is ready to become our bird feeder.

To make a grapefruit bird feeder you will need:

  • Half a grapefruit rind (you can also use an orange)
  • Three pieces of yarn, each cut about 18 inches long
  • A knife, skewer, pointed scissors, or other sharp tool
  • Birdseed

First, eat the grapefruit and drain the remaining liquid. Then, use the skewer or knife to poke three holes in the grapefruit. They should be about half an inch from the top edge and spaced evenly around the circumference. (Some people do this with four strings, but I find that using three strings makes it easier to balance the fruit.)

Push a piece of yarn through each hole and tie it off.

 Skewering the grapefruit rind.

Hold the grapefruit firmly with one hand while you poke the skewer through the rind. Be careful not to poke your finger!

 Tying yarn to the grapefruit to hang it.

Pull 2-3 inches through the rind and tie the short end to the longer strand.

Hold the grapefruit up by all three strings and adjust the length of the strands so the fruit is not tipping. When it is balanced, knot the strings together about 4 or 5 inches from the top. (The ends will probably be uneven, and that is all right.) Make a loop knot with those top ends, so you will be able to hang it from a branch. 

 The final product.

Our grapefruit bird feeder is balanced, full of seed, and ready to hang outside.

Finally, fill the fruit with birdseed and hang it outside for your feathered friends to enjoy. If you like, you can add a little suet, but you may find it doesn’t stick well to the wet fruit. Here in the Chicago area, you’ll probably find that most of your winter guests are black-capped chickadees, nuthatches, dark-eyed juncos, common redpolls, and downy or hoary woodpeckers, who balance their primary diet of insects and grubs with bit of suet and sunflower seeds.

One more thing: Make sure it’s tied to the branch firmly so that your local (determined) squirrels — who will also find this bird feeder appealing — don’t knock it down.

Don’t worry if you don’t have any visitors the first few days after you’ve placed your feeder. It can take up to two weeks for birds to discover their new food source, but once they do, they tell all their friends in the neighborhood.

 Grapefruit birdfeeder hung from a snow-covered fir.

The final product is ready for visitors.

What is birdseed?

You probably know that if you plant birdseed, you won’t grow a bird. And there is no such thing as a birdseed plant. So what plants make birdseed? What we call “birdseed” most commonly comes from two sources: millet, which is a grass, and sunflower. Other seeds used to feed birds include thistle, safflower, cracked corn, and sorghum seed, which is also called milo. Some birds have a preference for certain kinds of seeds, so bird lovers stock their feeders with seeds to attract their favorite birds and keep them visiting the feeder.

After you hang your bird feeder, take some of the seed and plant it to see what grows. Maybe you can grow your own food for the birds this year!

©2014 Chicago Botanic Garden and my.chicagobotanic.org

Who’s On Air?

Thu, 01/02/2014 - 9:21am

On December 4, 2013, the Garden became both the first public botanic garden—and the first Chicago cultural institution—to host a live field trip, with approximately 1,000 students across the country using Google+ Connected Hangouts on Air.

 The cover of the comic book.

Click here to download our slideshow of Nightmare on Ash Street for your classroom.

Our field trip topic was the impact of an invasive species on an ecosystem—specifically, emerald ash borer on our native ash trees. We wanted to make this complicated issue relevant and interactive for fifth- and sixth-grade students.

There are many fun things you can do with a live broadcast. The complex subject of balanced ecosystems and invasive species needed something unusual to capture students’ imaginations and attention. Our solution: begin our field trip with an original graphic comic about the emerald ash borer (EAB), and conclude by cutting down an infected tree during our broadcast. The live broadcast format also allowed our educators and horticulturists to go off script for some on-screen improvisation. 

Taking advantage of our medium, we presented from multiple locations—switching to read and show our comic book, present GIS (Geographical Information Systems) maps illustrating the spread of EAB in the U.S., view EAB larvae under a microscope in our science lab, and show how to diagnose the damage on—and treat (or remove)—an infected tree in the woods. The finale was cutting down the infected tree—live on camera! Before we signed off, we had an interactive Q&A between classrooms and Garden experts.

 An auditorium of kids watches our broadcast on a projection screen on stage.

An auditorium of seventh graders in California tunes in to our broadcast.

A series of technical and dress rehearsals—one with the three participating classrooms—were necessary to troubleshoot the quirks of Google+ Hangout on Air. We chose three classrooms from across the country as active participants who were able to ask questions on camera, and be seen by our experts and others tuned in. (Viewing classrooms can still participate by typing in questions during the broadcast.)

From a technical standpoint, it was critical to know the limits of this technology. Google Hangouts currently allows up to ten screens to actively participate in an on-air event, and our entire program had to be done live, as Google Hangout on Air does not allow for streaming video. We used four of our allotted screens at the Garden: one for our graphic novel with narration, one in the lab, and two in the field. The screens were controlled through a central operator (me!) who acted as an on-air producer, switching from one screen to another to control the on-air experience. We used two smartphones to transmit from the field, and tested several models with different operating systems and carriers to maximize image quality (especially in the woods), and keep gaps in the transmission to a minimum. Macintosh computers provided the indoor Garden screens; one was dedicated to the microscope, and the other used its built-in camera. The computers were hard-wired to the Ethernet network to ensure the best transmission possible. Delays were a minor issue: even under the best of circumstances, we experienced a short lag switching from user to user. This was particularly problematic when fielding classroom questions.

 Google connected classrooms graphic.

Explore more with connected classrooms.

While a virtual field trip is not a substitute for an actual visit to the Garden, it can offer something very different and unique, bringing together classrooms from all over the country. Virtual classrooms can also enrich classroom activities in schools facing budget shortfalls and scant funding for field trips. This new tool from Google can help us (and others) raise awareness about topics that affect us all from local to global impact. Follow us on Google+ to be alerted to our next virtual field trip and other Garden updates.

#ConnectedClassrooms   #VirtualFieldTrips

©2013 Chicago Botanic Garden and my.chicagobotanic.org

Repotting Orchids, Part 2: Paphiopedilum

Mon, 12/30/2013 - 9:02am

A Paphiopedilum, or lady slipper orchid, is another popular orchid with collectors: it prefers high humidity and indirect light, faring best in eastern early morning light. But how do you ensure early success?

 Closeup of a Paphiopedilum micranthum slipper orchid bloom.

Paphiopedilum micranthum lady slipper orchid bloom

Just as we learned in our first video, Repotting Orchids, Part 1: Phalaenopsis, it’s always best to repot your orchids shortly after purchasing them—the sphagnum moss in which they are sold provides too much constant moisture for the plant, and can damage the delicate, epiphytic root system.

Anne Nies, a master’s degree candidate in the Garden and Northwestern University’s Plant Biology & Conservation program, is an expert in all things orchids, both native and tropical. She is also a member of the Illinois Orchid Society, which holds its spring and fall orchid shows at the Garden. She took some time this past fall to show me (and you) how to repot our orchids to maintain a healthy growing environment.

Our second video details step-by-step instructions for repotting a Paphiopedilum orchid, which has different watering and culture needs from a Phalaenopsis. After your initial purchase and repotting, you should repot your orchid when your plant has finished blooming.

Mark your calendars for the Garden’s newest exhibition, The Orchid Show, opening February 15, 2014. Orchid lovers of all levels are sure to learn a lot more about orchids at the show. Can’t wait!

©2013 Chicago Botanic Garden and my.chicagobotanic.org

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