WSU Clark County Extension
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Oregon Ash

Scientific name: Fraxinus latifolia
Taxonomy
Family:Oleaceae
Type:Deciduous tree
Native:YES
Plant Requirements
Zone:6 to 7
Sun:Partial shade
Moisture:Wet
Plant Characteristics
Height:70 ft
Width:70 ft
Bloom:Spring flowers
Bloom Time:April to May
Bloom Color:Purple
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description A PNW native deciduous tree commonly found in wet areas in the lower reaches of the river valleys west of the Cascades. Its range extends from British Columbia to southern California.

  Morphology:
Compound opposite leaves, with 5-7 bright green, tapered leaflets. Golden yellow fall leaf color. Fruits winged.

  Adaptation:
An excellent native for wetland areas and restoration sites. Grows best where summers are generally cool and humid and winters are usually mild.

  Pests:
Leaf spot (caused by the fungus Mycosphaerella effigurata) can make the leaves look unslightly, but does not limit the growth of the tree.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
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