Fir Clubmoss
Huperzia selago · Lycopodiaceae
The gardener's calendar
Ideal time to plant fir clubmoss: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Common name
- Fir clubmoss, Alpine clubmoss
- Family
- Lycopodiaceae
- Type
- Primitive fern (Lycophyte)
- Foliage
- Evergreen, microphyllous
- Mature size
- 10 to 30 cm in height
- Growth
- Very slow
- Hardiness
- Down to -15 °C depending on origin
- Origin
- Mountainous, temperate and boreal regions of Europe and Asia
Care
Light and exposure
Huperzia selago thrives in partial shade or under indirect light. It dislikes direct intense sunlight which dries out its delicate foliage. Position it near a north or east-facing window for soft, consistent light.
Watering
Keep the substrate moist but not waterlogged at all times, especially during the growing season. Water with soft water (rainwater or filtered) to avoid lime buildup. Mist the foliage regularly to increase ambient humidity, which this ancient fern appreciates.
Soil and substrate
Use a light, well-draining substrate rich in organic matter: a mix of peat, heather soil and perlite. Slightly acidic to neutral pH is preferred. Ensure good substrate aeration to prevent root rot.
Fertilization
Apply a very diluted fertilizer (half the recommended dose) once a month during the spring-summer growing period. Primitive ferns are not heavy feeders. Excess nutrients can damage its fine roots.
Pruning and cleaning
Remove only dead or severely damaged fronds. This fern doesn't really need pruning; maintain its natural upright and compact form. Gently clean the foliage of dust with a damp brush.
Pests and diseases
Huperzia selago can be affected by spider mites in dry air. Increase ambient humidity and mist regularly to prevent infestations. Watch for root rot linked to excessive watering or poorly draining substrate.
Did you know?
Huperzia selago is one of the oldest forms of vascular plants: it has existed for over 400 million years, virtually unchanged, making it a true living fossil. Ancient Alpine peoples called it 'Gnome moss' or used its spores, which are extremely water-repellent, in celebrations.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Spinulum annotinumSpinulum annotinum
- Club mossLycopodium clavatum
- Lycopodiella inundataLycopodiella inundata
- Diphasiastrum complanatumDiphasiastrum complanatum
- Alpine clubmossDiphasiastrum alpinum
- Palhinhaea cernuaPalhinhaea cernua
Tips generated and checked by Viridia — adapt them to your local climate.