Asplenium decrescens

A spleenwort of the montane forests of Sri Lanka and the southern Western Ghats of India. Herbarium labels place it on shaded forest slopes, in tangled undergrowth at forest edges and on the bases of trees, mostly between about 500 and 2,100 m. Grow it as a cool-to-mild, humid, shaded forest fern.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light ShadeDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

Specimen labels record it on slopes in shaded cardamom forest, in tangled undergrowth at forest edges, and on tree bases at Horton Plains. It is therefore a ground fern or low epiphyte in humid montane forest.

Labelled records run from about 500 m to the Horton Plains (about 2,100 m), with several at around 1,400 m. The measured sites are at 790–2,090 m.

Sri LankaIndia

🔒 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.