Selaginella calostachya

Selaginella calostachya is a Sri Lankan endemic spikemoss of the wet and intermediate zone hills around Kandy. It grows on the ground in forest and scrub, at the base of cliffs and on mossy rock walls near waterfalls, in shade to partial shade. It wants warm, humid, evenly moist conditions.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

Records describe it on the ground in forest with cardamom, in reverting tea and bush, at roadsides, at the base of cliffs, and rooted superficially among mosses on a vertical wall in a glen 6 m from a waterfall.

Recorded at 90–600 m (median 580 m); measured sites run up to about 820 m.

Sri Lanka

🔒 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.