How much sun does Oregon ash need?

Oregon ash grows best in full sun conditions.

When does Oregon ash bloom?

Oregon ash blooms in March and April.

Where is Oregon ash native?

Oregon ash (Fraxinus latifolia) is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).

What pollinators does Oregon ash attract?

Oregon ash draws wind pollinated.

Oregon ash

Name: Pollinator Patch
Author: Pollinator Patch

Fraxinus latifolia

Last reviewed: October 2026

Oregon ash (Fraxinus latifolia) is a perennial tree native to CA, OR, WA. It blooms in March and April. The flowers draw wind pollinated.

Toxicity unknown

Oregon ash (Fraxinus latifolia) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

high

Size

240"–960" H × 180"–480" W

Bloom

Mar, Apr

Native to

CA, OR, WA

Pollinators

wind pollinated

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 459 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Coast Range Puget Lowland Marine West Coast Forest Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley Southern California Mountains North American Deserts Southern California/Northern Baja Coast

A large deciduous shade tree with compound pinnate leaves, small inconspicuous flowers, and winged seeds carried on the wind. Develops a rounded canopy and grows naturally along streams and in seasonally flooded bottomlands.

Growing Oregon ash

Grow Oregon ash in full sun and high water. Mature plants reach 240 to 960 inches tall and spread 180 to 480 inches wide.

Wildlife value

Provides substantial canopy nesting habitat for birds, and the winged seeds are eaten by finches and other seed-eating birds.

Common questions

How much sun does Oregon ash need?: Oregon ash grows best in full sun conditions.
When does Oregon ash bloom?: Oregon ash blooms in March and April.
Where is Oregon ash native?: Oregon ash (Fraxinus latifolia) is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).
What pollinators does Oregon ash attract?: Oregon ash draws wind pollinated.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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