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Physematium scopulinum

Woodsia scopulina

Also called Rocky Mountain woodsia, Cliff-fern, Woodsia, Rocky Mountain Cliff Fern, Mountain Cliff Fern, Mountain Cliffbrake, Mountain Woodsia

Physematium scopulinum
Photo: Unknown authorUnknown author, Public domain

Rocky Mountain woodsia is a small, deciduous perennial fern that grows in rock crevices in mountains across western and northern North America. It is best grown in a cool, moist but well-drained rocky or gritty spot that mimics its cliff habitat.

Family
Woodsiaceae (Woodsi family)
Grows as
Fern, Perennial
Light
Part shade
Water
Keep the rootstock moist in the growing season and let the top layer dry slightly between waterings; avoid waterlogging.
Soil
Gritty, well-drained mix such as coarse sand, grit and leaf mould, or rock crevices.
Temperature
Hardy to very cold winters, well below -20 °C; cool summers preferred.
How easy
Moderate
Native range
Subarctic America to W., C. & SE. U.S.A.
Climate
temperate

About

Physematium scopulinum, also called Woodsia scopulina, is a deciduous perennial fern in the family Woodsiaceae, with the common name Rocky Mountain woodsia.

This plant is native to the western and northern United States and Canada. W. scopulina is a small to medium sized fern, 10-30 centimeters high, which grows in mesic to dry rock crevices.

Where it grows

Physematium scopulinum is widespread in mountains near the west coast of North America from southern Alaska to southern California, and in the Rocky Mountains from British Columbia to Colorado. There are also isolated populations in northeastern North America.

Other Physematium plants

Physematium plummerae · Physematium · Physematium indusiosum · Physematium neomexicanum · Physematium obtusum · Physematium oreganum

Text excerpted from the Wikipedia article Physematium scopulinum 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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