Acer palmatum 'Oshio-beni'
     
Tried and True Recommended by 4 Professionals
Common Name: Japanese maple
Type: Tree
Family: Sapindaceae
Zone: 5 to 8
Height: 12 to 18 feet
Spread: 15 to 20 feet
Bloom Time: April
Bloom Description: Reddish-purple
Sun: Full sun to part shade
Water: Medium
Maintenance: Low
Flowers: Flowers not Showy
Leaves: Colorful, Good Fall Color
Tolerates: Black Walnuts, Rabbits

Culture

Easily grown in moist, organically rich, well-drained soils in full sun to part shade. Prefers lightly sun dappled part shade. Avoid hot and dry sites. Leaves may scorch in full sun in hot southern summers. Plant in a location protected from strong winds.

Noteworthy Characteristics

Japanese maple is a multi-stemmed shrub or single-stemmed small tree that typically grows to 10-25’ tall. General plant form is rounded to broad-rounded, often with low-branching. ‘Oshio-beni’ typically grows 12-18’ tall with a spreading form. Palmate, 7-lobed leaves (to 3” long) emerge bright orange-red in spring but fade to bronze-green by summer. Fall color is scarlet (cultivar name means great red tide). Small reddish-purple flowers in umbels bloom in mid spring. As with many maples, the flowers are rather attractive close up, but are not particularly showy from a distance. Flowers are followed by samaras (to 3/4” long) that ripen in September-October.

Problems

No serious insect or disease problems. Susceptible to stem canker. Verticillium wilt may also occur. Watch for scale, mites and aphids. Foliage tends to leaf out early in spring and is subject to damage from late spring frosts.

Garden Uses

Japanese maples are generally grown for their attractive foliage and shape. Specimen/accent or group around the home or yard or periphery of the border or rock garden. Multi-stemmed shrub form is effective in small groupings in shrub borders. Bonsai.