Plants that can be propagated by seed:

Arbutus

Baldhip Rose

Bigleaf Maple

Bitter Cherry

Black Cottonwood

Black Gooseberry

Black Hawthorn

Black Huckleberry

Cascara

Douglas Fir

Douglas Maple

Dull Oregon Grape

Fireweed

Garry Oak

Grand Fir

Mock Orange

Nootka Rose

Oceanspray

Pacific Bleeding Heart

Pacific Ninebark

Pacific Willow

Red Alder

Red Columbine

Red Elderberry

Red Huckleberry

Red Osier Dogwood

Salal

Salmonberry

Saskatoon Berry

Scouler's Willow

Sitka Alder

Sitka Spruce

Slough Sedge

Snowberry

Snowbrush

Spiraea

Tall Oregon Grape

Thimbleberry

Trailing Blackberry

Twinberry

Twinflower

Western Flowering Dogwood

Western Hemlock

Western Red Cedar