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  • … of magnolias. The specks are immature scales called crawlers, which move along the branches for a short time until they settle and begin feeding. Each crawler grows into a waxy, whitish … is called dormant season oil. It must be used when the temperatures will stay  above  freezing for 24 hours and  before  leaf or flower buds start to open. It is important to read and carefully follow instructions when applying horticultural oil. For additional information about the use of selected systemic insecticides to control scale, …
    Type: Plant Info
  • … them? A. If the bulbs are still firm and show no signs of decay or rot, you can pot them up for indoor forcing. Choose a wide, shallow pot with good drainage and use either a commercial … side and will hang decoratively over the edge of the container. Water well and store your pot for 13 to 14 weeks in a refrigerator (cover the pot with a plastic bag), a cold frame, a window …
    Type: Plant Info
  • … Core aeration is the most effective method of aeration because it allows the most room for water, nutrients, and root development.  The best time to aerate lawns is in the spring or … best time. Please contact Plant Information at (847) 835-0972 or plantinfo@chicagobotanic.org for more information. …
    Type: Plant Info
  • … prevent heat and transplant shock. Water thoroughly and gently at planting time and continue for the first year with 1 inch of water a week, spread throughout the root zone. Mulch root zones … Take care not to break these shoots when removing flowers. To increase flower production for the following year, pinch off one-half of this new green growth when it is at least one inch …
    Type: Plant Info
  • … Make this cut while the stem is under water. Cutting on an angle increases the surface area for water intake. Add floral preservative to the vase water. Most preservatives contains an acid … head as the flower and stem continue to float and the cut end of the stem remains under water for at least one-half hour. When the flower head hardens to a straightened position, the roses …
    Type: Plant Info
  • … are pruned. Small yellow flowers appear in March, and during a cool spring, they'll last for weeks. Bright red fruit that ripens in midsummer is edible but extremely tart. Fall color can … Members of the genus Cornus , commonly known as dogwoods, are welcome in the home garden for their multi-season interest -- be it flowers, fruit, foliage, and/or bark -- and their range …
    Type: Garden Guide Plant
  • … Light yellow petals surround a bright purple lip on this cane orchid ideal for leis. Grow in bright light, moderate humidity, well drained potting media. The flower spikes … 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. Many varieties …
    Type: Garden Guide Plant
  • … of the European beech have been developed, many of which are eye-catching show stoppers for their shape (weeping, columnar or rounded) or foliage color (green, variegated, purple or … to the U.S. and Illinois. A single species, Fagus sylvatica or the European beech, accounts for the vast majority of cultivars used in landscaping. The Chicago Botanic Garden's collections …
    Type: Garden Guide Plant
  • … of the European beech have been developed, many of which are eye-catching show stoppers for their shape (weeping, columnar or rounded) or foliage color (green, variegated, purple or … to the U.S. and Illinois. A single species, Fagus sylvatica or the European beech, accounts for the vast majority of cultivars used in landscaping. The Chicago Botanic Garden's collections …
    Type: Garden Guide Plant
  • … of the European beech have been developed, many of which are eye-catching show stoppers for their shape (weeping, columnar or rounded) or foliage color (green, variegated, purple or … to the U.S. and Illinois. A single species, Fagus sylvatica or the European beech, accounts for the vast majority of cultivars used in landscaping. The Chicago Botanic Garden's collections …
    Type: Garden Guide Plant