Botanical Name: Acer macrophyllum
Common Name: Bigleaf maple (Oregon Maple)
Type of Plant: dicot: tree
Character deciduous
 
Habit of Growth:
Overall Shape an erect, single or multi-trunked tree, with ascending branches forming a broad rounded canopy; young branches are smooth, older growth is covered with gray bark
Height 25'-50'(90')
Spread 2/3 to equal
Growth Rate rapid
 
Environment:
Exposure outdoor full/partial sun, can tolerate shade at inland location
Soil moist, acidic, well-draining loam; tolerates heavier soils
Hardiness hardy (zones 4-17); thrives in mild-climate foothills
 
Morphology:
Leaves palmate, opposite, mostly 3-5 lobed, 8"-15" (18") long and as wide, petioles 6"-12" long; dark green above, pale green beneath
Flowers yellowish green, in drooping staminate or pistillate racemes 4"-6" long
Fruit a two-winged samara; 1 ½"-2" long, covered w/short hairs
 
Propagation:
seed (stratify for 2 months)
 
Usage:
a large shade tree (can be controlled in growth and size by watering and fertilizing less); develops a yellow fall color of leaves in colder areas; best for rustic, woodsy landscapes
 
Landscape Care:
Watering likes regular; tolerates occasional deep soak after established
Fertilizing little required except if grown in heavy watered area
Pruning head high when young to develop primary tree-form
Pests/Diseases powdery mildew on leaves if planted near the coast
Special Conditions/Other
 
Origin: California/Alaska
Family: Aceraceae

Notes:
 
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