Species library › Blechnum › Blechnum simillimum
Ferns Partly documented

Blechnum simillimum

A hard fern of Madagascar's humid eastern forests, recorded mostly between 500 and 1500 m, with outliers on Réunion and the Comoros. Grow it like other tropical-montane Blechnum: warm days, cool nights, constantly moist acidic medium and soft shade.

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

Recorded across Madagascar's eastern rainforest belt from near sea level to almost 2000 m; inferred from the genus to be a terrestrial fern of shaded forest floor, banks and stream edges.

40–1950 m, median about 1000 m in 129 records.

MadagascarRéunionComoros

🔒 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

Grow Blechnum simillimum? Add it to a free garden and its full profile opens. Pro opens all 38,374 profiles in the library, plants and fungi.

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