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  • … The genus Quercus includes more than 600 species of the oak tree, of which 90 are native to North America; the Chicago Botanic Garden's collection contains more than 60 varieties and over 1,000 individual trees. Twenty oak species are native to Illinois. Oaks are slow growing, long lived, hard wood trees that produce fruit we all know as … (biennial). Oaks are often imposing shade trees at maturity and provide habitat and food for a variety of wildlife. …
    Type: Garden Guide Plant
  • … This evergreen spring flowering shrub grows to 4 feet in size when provided partial shade and moderate moisture conditions. It produces domes … soil pH. Acidic pH is not a characteristic of most Chicago area soils so care must be taken to incorporate peat into the soils, top dress with granulated sulfur, and fertilize with liquid products identified as appropriate for Rhododendron and other acidic-loving plants. The root system is comprised of a dense network …
    Type: Garden Guide Plant
  • … along the branches in May. Fall foliage color is a reddish-purple. It will grow in full sun to partial shade and is not fussy about soil types or conditions. This cultivar was introduced … in the trade. Viburnums are a versatile genus of multistemmed shrubs that are well-suited to the home landscape due to their range of sizes and cultural adaptability. Some viburnums are noted for their fragrant flowers; most bear small fruit that may add visual interest. Many viburnums …
    Type: Garden Guide Plant
  • … and contrasting colors and in a variety of shapes and sizes. Although some orchids are native to temperate zones, most orchids tend to prefer a semitropical or tropical environment (USDA Zones 9 to 11) and have epiphytic … by genus and is consistent with their natural habitat. While requiring adequate sunlight for a stunning bloom display, most orchids will not tolerate sustained direct sun. …
    Type: Garden Guide Plant
  • … Continue to care for indoor flowering gift plants. Azaleas require even moisture and bright light. Deadhead to keep plants blooming for four to six weeks. Azaleas can go outside to a partly shaded location after May 15, but must …
    Type: Plant Info
  • … apples, or quince. Orange, rusty-colored spots appear on the upper surface of leaves in mid- to early July in the Chicago area. Short orange tendrils emerge from the infected spot on the … & Life Cycle During wet spring weather, spores are released from orange tendrils that appear to drip from galls on junipers. These spores are blown to hawthorns, apples, or quince where they … Early spring preventative fungicide treatment of hawthorns may be warranted in some cases. For recommended chemical treatments for rust, please contact Plant Information Services at (847) …
    Type: Plant Info
  • … poison ivy and you will hear a few choice words. But come fall, poison ivy practically begs us to love it. Its leaves are some of the first to turn colors, from green to brilliant shades of red, yellow, and orange. If you spot its … the most common."  How to identify poison ivy Poison ivy takes many forms, so it is important for hikers, gardeners, and anyone who enjoys the outdoors to become familiar with its …
    Type: Blog
  • … fiber art techniques, then place it into a bezel setting and complete the rest of the necklace for a beautiful combination of beads, metal charms, and fibers. All materials are included in the …
    Type: Item Detail
  • … Ph.D., curator of woody plants, likes this large shrub, which can reach 12 feet tall and wide, for its bright orange-red stems: “As the name implies, this shrub willow glows like a flame in …
    Type: Plant Info
  • … will learn the fundamental principles of aquaponics production as well as tips and tricks for building an at-home or small-scale aquaponics system. This course will include hands-on work …
    Type: Item Detail