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  • … Peonies are popular garden plants, known for their stunning flowers, their cold hardiness and the huge variety of their colors, forms and … category, the Itoh or intersectional peonies display the extravagant blooms of tree peonies on herbaceous stems. All peonies bloom between April and June; flowers on tree peonies appear 1-2 … as early, mid and late – ‘Moon Over Barrington’ is a mid-season bloomer. It grows to 26” tall, taking on a shrubby appearance throughout the summer, then dies to the ground in the …
    Type: Garden Guide Plant
  • … Fresh herbs bring a welcome hint of summer, and many favorites thrive on a windowsill in winter as well as in the summer garden. Most herbs require four to six hours … to a cool windowpane. Many herbs, such as thyme, chives, oregano, and rosemary, can be grown on the dry side. Make sure pots drain well, and pinch plants frequently to keep windowsill herbs … sphagnum moss and water. Covering pots with a plastic bag or glass plate keeps seeds moist for germination. Seed-grown herbs won't produce large plants, but the young plants are just as …
    Type: Plant Info
  • … their emergence is weather-dependent; given the warm winter, we could be looking at emergence on the early side. They’ll come out when the soil temperature at 8 inches deep reaches 64 degrees … and red eyes, about ¾ to 1¼ inches in length; annual cicadas are green with black eyes and on the larger side, approximately 1 to 2 inches long. Another thing that differentiates the … broods is right around the center of Illinois—so Northern Illinois is part of the territory for Brood XIII, which also shows up in parts of Wisconsin, Iowa, Indiana, and Michigan; they last …
    Type: Blog
  • … trees can raise the show of new color from ground level to eye level and above. Read on for some good choices if you want to raise the bar on spring color within your landscape. On with … year, but plants are shown in the typical sequence. To experience these plants in full bloom, visit What’s in Bloom . …
    Type: Plant Info
  • … Kris Jarantoski Campus The July 2014 groundbreaking for a new tree nursery on the Kris Jarantoski Campus. Donate Maintaining and redefining … from its current 18,000 square feet to more than 55,000 square feet. The structures will have 26 climate-controlled zones compared to the 11 currently in place, and the new outdoor nursery … The July 2014 groundbreaking for a new tree nursery on the Kris Jarantoski Campus. Donate Maintaining and redefining Horticultural Excellence The …
    Type: Page
  • … Herbs are grown for many reasons — medicine, cooking, aromatherapy, garden beauty, or tea making. Teas made from the following plants can be drunk for medicinal purposes or just for their good taste. Cowslip  ( Primula veris ) A lovely little … Strain into a cup and drink lukewarm or cool. Use either fresh or dried herbs, depending on your taste. For the purest tea, avoid spraying all herbs or plant foliage with chemicals …
    Type: Plant Info
  • … New! Homemade soups are easy to adapt, whether for a simple supper or a celebratory gathering. In this hands-on cooking class, you will learn to make a hearty fennel, kale, and sausage stew as well as a …
    Type: Item Detail
  • … Q. Do you have any suggestions for plants that can be used in a fall container? A.  September is a perfect time to plant a … thrive in cooler temperatures and contribute a large variety of color. Blue lobelia is perfect for unusual fall color and loves cooler temperatures. Stock, Sweet Alyssum, and dianthus are … die back after the first frost. Now is the time to take advantage of end of the season sales on perennials and some summer annuals to include in your containers. Select …
    Type: Plant Info
  • … Stewardship and Ecology of Natural Areas Program       Join us for the 2026 Season! Application reviews will begin on January 26, 2026, and will continue until the position is filled. This job posting will close on February …       Join us for the 2026 Season! Application reviews will begin on January 26, 2026, and will continue until the position is filled. This job posting will close on February …
    Type: Page
  • … New! Enjoy an evening of tasty Italian bites to serve as inspiration for a fall or winter get-together in this hands-on cooking class. Learn techniques to create the following appetizers: roasted artichoke hearts, …
    Type: Item Detail