Alpine clubmoss
Diphasiastrum alpinum · Lycopodiaceae
The gardener's calendar
Ideal time to plant alpine clubmoss: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen, dark green
- Adult size
- 5 to 15 cm in height
- Growth
- Very slow
- Hardiness
- Very hardy, down to -20°C
- Origin
- Mountainous and Arctic zones of Eurasia
- Soil type
- Acidic, well-draining, slightly moist
- Exposure
- Partial shade to shade
- Reproduction
- Spores (no flowers)
Care
Watering
Alpine clubmoss appreciates a slightly humid atmosphere and soil that never dries out completely. Water moderately in summer to maintain consistent moisture, especially in dry climates. In winter, reduce watering but don't let the substrate dry out entirely.
Light exposure
This plant thrives in partial shade to full shade, mimicking mountain forest understory conditions. Avoid direct sunlight, which can dry out its fine, delicate foliage. It tolerates indoor environments with filtered light.
Soil and substrate
Use acidic, organic-rich, well-draining soil—ideally a mix of peat or leaf mould with sand or perlite. Keep the pH slightly acidic (5.5 to 6.5). Ensure water never pools, as standing moisture damages the roots.
Pruning and maintenance
No pruning is needed on this compact little plant. Simply remove dead or damaged portions carefully. Respect its very slow growth: it takes years to spread.
Fertilizing
This very frugal organism needs only minimal diluted fertilizer application, once or twice yearly during the growing season (spring-summer). Prefer a balanced or acidic-soil-specific fertilizer.
Pests and diseases
Alpine clubmoss is generally robust but dreads stagnant excess moisture, which can cause rot. Regularly check that no debris clutters the fine foliage and that air circulation remains good.
Did you know?
Alpine clubmoss is a living fossil dating back over 400 million years: its prehistoric ancestors formed giant forests covering the Earth long before dinosaurs appeared. Unlike ferns, clubmoss reproduces solely through microscopic spores—a multiplication method only ancient cryptogams retain. This Arctic plant symbolizes resilience and adaptation: it grows in the harshest environments, yet its growth is so slow that a single specimen may be several centuries old.
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
- Fir ClubmossHuperzia selago
- Diphasiastrum complanatumDiphasiastrum complanatum
- Palhinhaea cernuaPalhinhaea cernua
Tips generated and checked by Viridia — adapt them to your local climate.