Aster alpinus
Species of plant
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Through Species, Flowering plant and Native species
Description
Aster alpinus is a caespitose herbaceous perennial that grows 10–35 cm tall. The bloom color may be blue, indigo, violet, white, or pink. In the UK, this plant has gained the Royal Horticultural Society's Award of Garden Merit. Leaves are untoothed, lanceolate-spatulate, and basal. The Latin specific epithet alpinus means alpine and from high mountains above the timber line.
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Distribution and habitat
Aster A. alpinus generally prefers rockier soils. Its minimum pH scale is 6 and maximum pH scale is 7.5. Flowers are erect, and always solitary. Aster alpinus is native to the mountains of Europe such as the Alps and Pyrenees. Aster alpinus is the only true aster growing in North America. It's fruits are achenes, topped by white bristles.
Aster A. alpinus is an herbaceous plant. It does better in generally cooler climates, so it's US hardiness zones are 5 to 7.
Conservation
NatureServe lists variety Aster alpinus var. vierhapperi as Secure Variety (T5) in Canada, but Critically Imperiled (S1) in Ontario and Vulnerable (S3) in Alberta. In the United States, it is Critically Imperiled (S1) in Colorado and Wyoming.