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Gulf of St. Lawrence aster

Symphyotrichum laurentianum

Also called St. Lawrence Annual Aster

Gulf of St. Lawrence aster
Photo: rampancy, CC BY 2.0

A rare, critically imperiled North American aster native only to the southern shores of the Gulf of St. Lawrence in eastern Canada, growing as a small annual herb about 13 cm tall. It is a wild species of conservation concern rather than a garden plant, so cultivation advice is limited.

Family
Asteraceae (Daisy family)
Grows as
Annual
Light
Full sun
Water
Keep the soil lightly moist during establishment, then let the top layer dry slightly between waterings.
Soil
Well-drained, sandy or gravelly soil, fairly lean
Temperature
Hardy to cold winters; grows in cool maritime climates
How easy
Moderate
Native range
E. Canada

About

Symphyotrichum laurentianum (formerly Aster laurentianus) is a critically imperiled species of flowering plant in the family Asteraceae endemic to the southern shores of the Gulf of St. Lawrence in Canada. Commonly known as Gulf of St. Lawrence aster, it is an annual, herbaceous plant with one stem and no ray florets that grows up to about 13 centimetres (5 inches) tall.

Other Symphyotrichum plants

Scaleleaf aster · Manyray aster · Anticosti Island aster · Western aster · Symphyotrichum bimater · Northern bog aster · Symphyotrichum bullatum · Symphyotrichum burgessii · Western meadow aster · Carneros Aster · Savanna aster · Symphyotrichum chihuahuense

Text excerpted from the Wikipedia article Symphyotrichum laurentianum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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