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Fir Clubmoss

Huperzia selago

Also called Fir Club Moss, Northern Fir Moss, Northern Firmoss

Fir Clubmoss
Photo: User:Tigerente, CC BY-SA 3.0

Fir clubmoss is a small, evergreen, perennial fern ally with stiff upright stems densely covered in needle-like leaves. It is a wild plant of cool northern regions and is rarely grown in gardens, so care notes describe its natural conditions.

Family
Lycopodiaceae (Lycopodi family)
Grows as
Perennial
Light
Part shade
Water
Keep the soil consistently moist but never waterlogged, as it favours damp habitats.
Soil
Acidic, moist, humus-rich or sandy-peaty soil, similar to its natural heath and bog habitats.
Temperature
Cool conditions, tolerant of hard winters; protect from prolonged heat above about 25 °C.
How easy
Hard
Safety
Toxic: The plant contains huperzine alkaloids, which are reported to be poisonous if eaten in quantity and are used in medicine for their cholinesterase-inhibiting effects.
Native range
Temp. Northern Hemisphere, W. Indian Ocean
Climate
temperate

About

Huperzia selago, the northern firmoss or fir clubmoss, is a vascular plant in the family Lycopodiaceae. It is small-ish, sturdy, stiff and upright and densely scale-leaved. This plant is an evergreen, perennial pteridophyte. The spores are produced June to September (in the northern hemisphere). It has a circumpolar distribution.

Where it grows

It is a circumpolar plant, found in the northern parts of North America, Europe, and Asia. It is found in sandy pits, ditches, along lakeshores, heathland and in conifer swamps. In the northeastern United States, it is found in boreal habitat, but not alpine zones.

Other Huperzia plants

Appalachian clubmoss · Appalachian Firmoss · Huperzia australiana · Shining clubmoss · Rock clubmoss · Toothed clubmoss · Clubmoss

Text excerpted from the Wikipedia article Huperzia selago 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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