Symphyotrichum
aster
20 species
4 subspecies and varieties
4 subspecies and varieties
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Symphyotrichum ×amethystinum – amethyst aster, hybrid aster
Origin: Introduced
Growth Duration: Perennial
Origin: Introduced
Growth Duration: Perennial
Symphyotrichum ascendens – intermountain aster, long-leaved aster, western American aster, western aster
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Meadows, grasslands, and forest openings, often where moist.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Meadows, grasslands, and forest openings, often where moist.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Symphyotrichum boreale – northern bog aster, rush aster, slender white aster
Distribution: Occurring east of the Cascades crest in northeastern Washington; Alaska to Washington, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Cold bogs.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in northeastern Washington; Alaska to Washington, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Cold bogs.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum bracteolatum – bracted aster, Eaton's aster, Oregon aster
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Moist to wet sunny places, wet thickets, along streams and ditches
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and northern Great Plains.
Habitat: Moist to wet sunny places, wet thickets, along streams and ditches
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum campestre – western meadow aster
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Dry to moist forest openings, shorelines, and other open areas from low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Colorado.
Habitat: Dry to moist forest openings, shorelines, and other open areas from low to middle elevations.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Symphyotrichum chilense – common California aster, Pacific aster
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Coastal, bluffs, grasslands, open slopes, salt marsh margins, and disturbed ground.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to California.
Habitat: Coastal, bluffs, grasslands, open slopes, salt marsh margins, and disturbed ground.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Symphyotrichum ciliatum – alkali American aster, rayless alkali aster, rayless annual aster
Distribution: Occurring east of the Cascades crest in northern Washington; British Columbia to northern Washington, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Moist to dry open forest and meadows.
Origin: Native
Flowers: August-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in northern Washington; British Columbia to northern Washington, east across Canada and the northern U.S. to the Atlantic Coast.
Habitat: Moist to dry open forest and meadows.
Origin: Native
Flowers: August-September
Growth Duration: Perennial
Symphyotrichum ericoides – heath-leaved aster, tufted white prairie aster
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to Oregon, east to the Rocky Mountains, and further east across Canada and most of North America to the Atlantic Coast.
Habitat: Open, wet or dry places in the valleys and plains; tolerant of alkali.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; southern British Columbia to Oregon, east to the Rocky Mountains, and further east across Canada and most of North America to the Atlantic Coast.
Habitat: Open, wet or dry places in the valleys and plains; tolerant of alkali.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
• var. pansum – little gray aster, tufted white prairie aster, white heath aster
Symphyotrichum foliaceum – alpine leafybract aster, Canby's leafybract aster, Cusick's American aster, Cusick's aster, Henderson's aster, Kootenai aster, leafy aster, leafy-bracted aster, Parry's aster
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Open, usually moist areas, low to high elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Open, usually moist areas, low to high elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum frondosum – alkali aster, short rayed aster, short-rayed alkali aster
Distribution: British Columbia to California, esat to Idaho, Wyoming, Colorado, and New Mexico.
Habitat: Moist, usually saline soil, often along the shores of lakes and ponds, or in vernally moist, alkaline bottoms.
Origin: Native
Flowers: August-October
Growth Duration: Annual, Perennial
Distribution: British Columbia to California, esat to Idaho, Wyoming, Colorado, and New Mexico.
Habitat: Moist, usually saline soil, often along the shores of lakes and ponds, or in vernally moist, alkaline bottoms.
Origin: Native
Flowers: August-October
Growth Duration: Annual, Perennial
Symphyotrichum hallii – Hall's aster
Distribution: Occurring west of the Cascades crest in Washington; Washington to Oregon.
Habitat: Dry, open places in the valleys and plains.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington; Washington to Oregon.
Habitat: Dry, open places in the valleys and plains.
Origin: Native
Flowers: July-October
Growth Duration: Perennial
Symphyotrichum jessicae – Jessica's aster, Palouse aster
Distribution: Occurring east of the Cascades crest in eastern Washington; eastern Washington to adjacent western Idaho.
Habitat: Streambanks and open places.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in eastern Washington; eastern Washington to adjacent western Idaho.
Habitat: Streambanks and open places.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum laeve – Geyer's aster, smooth aster
Distribution: Occurring east of the Cascades crest in eastern Washington; Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Open places in the plains and valleys to middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in eastern Washington; Yukon Territory to California, east across most of North America to the Atlantic Coast.
Habitat: Open places in the plains and valleys to middle elevations in the mountains.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
• var. geyeri – Geyer's smooth aster
Symphyotrichum lanceolatum – marsh aster, western willow aster
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Moist meadows, sometimes where saline, shores, and open forest at low to middle elevations.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Moist meadows, sometimes where saline, shores, and open forest at low to middle elevations.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
• var. hesperium – lance-leaved aster, panicled aster, white panicled aster
Symphyotrichum novae-angliae – New England aster
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to Oregon, east to the Rocky Mountains; native from central North America east to the Atlantic Coast.
Habitat: Roadsides and disturbed areas where somewhat moist.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring in scattered locations on both sides of the Cascades crest in Washington; southwestern British Columbia to Oregon, east to the Rocky Mountains; native from central North America east to the Atlantic Coast.
Habitat: Roadsides and disturbed areas where somewhat moist.
Origin: Introduced from central and eastern North America
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum novi-belgii – New York aster
Habitat: Pond and lake margins at low to middle elevations.
Origin: Introduced from eastern North America
Flowers: August-September
Growth Duration: Perennial
Habitat: Pond and lake margins at low to middle elevations.
Origin: Introduced from eastern North America
Flowers: August-September
Growth Duration: Perennial
Symphyotrichum pilosum – hairy aster
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; southwestern British Columbia to Washington, otherwise native from the U.S. Great Plains east to the Atlantic Coast.
Habitat: River cobbles, gravel, disturbed ground, and railroads.
Origin: Introduced from central and eastern North America
Flowers: August-October
Growth Duration: Perennial
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; southwestern British Columbia to Washington, otherwise native from the U.S. Great Plains east to the Atlantic Coast.
Habitat: River cobbles, gravel, disturbed ground, and railroads.
Origin: Introduced from central and eastern North America
Flowers: August-October
Growth Duration: Perennial
• var. pilosum – hairy aster
Symphyotrichum spathulatum – western aster, western mountain aster
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Meadows and forest openings, from middle elevations to the subalpine.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Meadows and forest openings, from middle elevations to the subalpine.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Symphyotrichum subspicatum – Douglas' aster, Douglas's aster
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana and Idaho.
Habitat: Moist woods, streambanks and seashores.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana and Idaho.
Habitat: Moist woods, streambanks and seashores.
Origin: Native
Flowers: July-September
Growth Duration: Perennial
