Information on Japanese Maples
- Japanese maple typically grows to be between 15 to 20 feet tall, though it may grow to be larger depending on growing conditions. The plant is characterized by horizontal layers of smooth, slender gray branches and sharply lobed maple leaves. Leaves turn fiery shades of yellow, orange and scarlet in the autumn before dropping off the tree. The plant may be vase shaped, upright or weeping depending on cultivar.
- Cultivars include Bloodgood, a slow growing, upright variety that offers pinkish foliage that gradually darkens to burgundy, Versicolor, a hardy variety that offers green and white variegated foliage, and Butterfly, a gray, green and pinkish white variegated cultivar that grows to be about 15 feet tall when mature. Common dwarf varieties include Shaina and Sharp's Pygmy, both of have a rounded habit and grow to be between 4 to 6 feet tall.
- Japanese maple is a native of China, Korea and Japan. It is a suitable landscape plant for U.S. Department of Agriculture Plant Hardiness Zones 6 to 8, although some cultivars are suitable for zones 5B and 9A. In warmer climates, Japanese maple prefers partial or filtered shade, while trees grown in cooler climates require a sunnier location in the garden. Plant in a fertile, well-draining soil that has an acidic pH. Japanese maple does not do well in drought, and should be watered regularly.
- Common pests include aphids and scale, both of which can cause unsightly foliage damage. Borers may also occur as a result of poor cultural practices. Aphids can be removed with a steady stream of water, or an insecticide, while scale is best removed with horticultural oil. Aphids often disappear naturally via predatory insects. Cultural problems include scorch, which may be caused by hot, drying winds or dry soil. Increase watering, especially during summer.
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