… Green roof ecosystems are increasingly used to compensate for the loss of green space and biodiversity in many cities. Their ecosystem … carbon sequestration, and how common green roof plant species and the soil microbes respond to nitrogen pollution. Our results to date show that green roofs are possibly less effective than restored prairies for carbon …
Type: Research
… Prune grapevines according to selected method. For detailed information on pruning grapevines, contact plant information at (847) 835-0972 to order Plant Information Fact Sheet #36, Pruning Grapevines. Prune raspberry bushes and reattach canes to support system, if necessary. Some gardeners mow their raspberry patches to the ground this …
Type: Plant Info
… Native to North Africa and Asia, the Armenian willow displays bright yellow catkins in early spring. … known as willows. These woody plants range in size from the imposing weeping willow tree to small shrubs. While not fussy about soil quality, they generally require moderate to wet soil moisture. In the wild, willows are commonly found near streams, rivers and ponds. In …
Type: Garden Guide Plant
… but well-drained soil, and divide when the clumps of corms have become so congested they start to push up to the surface of the soil. Interplant the corms with companion plants that begin growth late in the season to accommodate the luxuriant spring foliage, which provides a backdrop for the flowers in fall. …
Type: Garden Guide Plant
… for their flowers which appear in late winter or early spring and are often the first flowers to appear in the Chicago garden. Green Gambler hellebore grows into a low mound about twenty inches high and 2 feet wide. New foliage emerges as maroon, then matures to dark green with finger-like clusters of up to ten serrated leaves that are evergreen … or veining. Hellebores prefer cool moist soils but are very adaptable requiring only that the site be well-drained. Typically they are planted in woodland settings under deciduous trees where …
Type: Garden Guide Plant
… This break-through variety of novelty poinsettia was the first to feature rich red bracts speckled with pink and creamy white. Poinsettias have flower bracts … meaning that they require darkness (12 hours at a time for at least five days in a row) to change color. At the same time, they require abundant light during the day for the brightest … grouped within small yellow structures found in the center of each leaf bunch. Native to Mexico, the poinsettia derives its common English name from Joel Roberts Poinsett, the first …
Type: Garden Guide Plant
… Tim Pollak is the Manager, Plant Production at the Garden, where he has worked since 2001. As part of his … the high-impact horticulture displays and unusual plants and flowers that the Garden displays to create excitement for plants. He has a bachelor of science degree in landscape horticulture, … Pollak writes for newspapers and other media and appears regularly on local TV news segments to discuss gardening topics. He is also a regular instructor for the Joseph Regenstein Jr. School …
Type: Staff bio
… Young children love to get their hands dirty. Spend three days of gardening fun, practicing activities for young children, both inside and out. This workshop features easy-to-grow plants that stimulate the senses as well as simple investigations and activities to teach about plant parts, life cycles, and how plants and animals live together. CPDUs: 18, …
Type: Item Detail
… and well-drained, moisture-retentive, fertile soils. Train it on an arbor or trellis, or on to a small tree/large shrub. To the extent possible, ensure the foliage has plenty of space around it to encourage good air movement and discourage diseases. …
Type: Garden Guide Plant
… are a favorite of bees. Plant the yellow coneflower in full sun, and water it just enough to establish a deep root system. Allow seeds to ripen and disperse naturally to provide for future generations in your garden. …
Type: Garden Guide Plant
