Selaginella helferi

A mainland South-east Asian spikemoss found from Assam and southern China to Thailand, Indochina and the Nicobar Islands, at about 225–1800 m. It grows in a monsoon climate with hot, very wet summers and cool, dry winters, so it needs warmth and moisture in summer and tolerates a cooler, drier winter.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Specific habitat notes were not checked; assumed forest floor, banks and rocks in evergreen and mixed monsoon forest, typical of the region's terrestrial Selaginella.

Recorded at 225–1800 m (median 679 m, 19 records).

AssamBangladeshCambodiaChina South-CentralChina SoutheastEast HimalayaLaosMyanmarNicobar Is.ThailandVietnam

🔒 Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

✓ Day and night temperature targets, and the limits it tolerates

✓ Humidity band, and how to hold it

✓ Light as DLI and PPFD for a grow light

✓ Wet and dry seasons, and whether to rest it

✓ Substrate and airflow

✓ A step-by-step setup to grow it like the wild

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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.