General Culture:
Easily grown in average, medium moisture, well-drained soils in full sun to part shade. Prefers evenly moist, acidic soils with good drainage in part shade.
Noteworthy Characteristics:
Native to forests in Japan, China, Korea, Mongolia and eastern Russia, Acer pictum is a deciduous tree that typically grows to 30-40’ (less frequently to 60') tall with a rounded spreading crown. It sometimes grows in a shrubby form. Variable leaves (3-6” long) have 5-7 triangular lobes. Leaves emerge with bronze tints in spring, mature to bright green by summer and turn attractive shades of yellow and orange in fall. Leaf stems exude a milky sap when cut. Greenish-yellow flowers appear in April-May in upright clusters (umbels). As with most maples, the flowers are not showy. Fruit is a samara (to 1.5” long). Some authorities object to the use of Acer pictum to describe any maple because of a prior incorrect use of that name to describe Kalopanax pictum now known as Kalopanax septemlobus.
Problems: Click for detailed list of pests and problems.
No serious insect or disease problems. Potential disease problems include verticillium wilt, leaf spots, tar spot, root rots, anthracnose, collar rot and stem canker. Potential insect pests include aphids, scale, borers and caterpillars. Mites may appear.
Uses:
Excellent landscape tree/shrub. Specimen or accent around homes, patios or other small areas.
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Garden, 2001-2009