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  • … sun, but be sure to bring in the tubers if frost threatens again. Label the tubers properly with name, height and color of dahlias. Dust with fungicide if desired. Store tubers in boxes of peat moss, shredded newspapers, sawdust or …
    Type: Plant Info
  • … iris. A. If you want to divide bearded iris, do so after it flowers, but before August. With a sharp, sterilized knife, cut the rhizome into pieces containing a set of leaves and … circle. Siberian iris ( I. sibirica ) can be divided in July by digging up the entire clump with a sharp shovel and then separating the clump into as many sections as you want. For an …
    Type: Plant Info
  • … Are you interested in learning more about how to work with youth in an urban agriculture or school garden setting? Would you like to know more about … Let us know that you’re interested! Complete the interest form and staff will follow up with you when we schedule the next training. Interest Form   …
    Type: Item Detail
  • … but it may be difficult to induce it to produce the flowers, which are mostly lime green with long yellow tubes. The large ovate leaves are thick and waxy, and the vines can easily grow to over 100 feet long in the tropics, clinging to trees with aerial roots. The plants are self-fertile and in their native habitat, pollinated by …
    Type: Garden Guide Plant
  • … this hardy perennial has long racemes of pendulous, fragrant, white flowers that contrast with its dark, purplish foliage. This is a hybrid of the Asian species Actaea simplex and the … racemosa from a cross made in the Netherlands by Piet Oudolf. It can reach a height of 5 feet with a 2-foot spread when established (second year) and prefers moist, humus-rich soils in …
    Type: Garden Guide Plant
  • … petals, or corolla lobes, are slightly cupped forward. Five spoon-shaped pink to purple petals with white spots nestle in the center. In late summer to fall, narrow, 4-inch long, curved follicles (seedpods) form and split open, releasing seeds with silky tufts. Like most milkweeds, the alternate leaves exude an irritating milky sap. It is …
    Type: Garden Guide Plant
  • … the largest blooms of the genus, Allium christophii features star-shaped purple-violet flowers with a metallic sheen on loose umbels from 4 to 8 inches across on 1' to 2' plants. Found in … another of the large-flowered onions that succeed best in Chicago landscapes if interplanted with low-growing perennials and shrubs that will keep soil moisture levels lower during mid to …
    Type: Garden Guide Plant
  • … 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 … vulgaris . All parts of the plant are toxic and should not be ingested. The toxins interfere with normal cell growth. The genus name pays homage to the ancient kingdom of Colchis at the …
    Type: Garden Guide Plant
  • … Nikko slender deutzia is a dwarf cultivar with a spreading habit. It produces abundant small white flowers in spring. Unlike many deutzia, … color. The genus Deutzia consists of medium sized flowering shrubs native to Asia, generally with slender stems and a fine-textured arching habit. The clusters of small flowers that appear …
    Type: Garden Guide Plant
  • … Deutzia 'Pink Pompon' features clusters of double pink flowers that fade to white with age. Fall foliage can be a burgundy shade. The genus Deutzia consists of medium-sized flowering shrubs native to Asia, generally with slender stems and a fine-textured arching habit. The clusters of small flowers that appear …
    Type: Garden Guide Plant