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Species library › Asplenium › Asplenium horridum
Ferns Partly documented

Asplenium horridum

A large spleenwort of Pacific islands, from Vanuatu and Fiji to Hawaii and French Polynesia, described by Kaulfuss in 1824. It grows in wet upland forest. It needs mild, even temperatures and constant humidity.

Asplenium horridum
Photo: David Eickhoff from Pearl City, Hawaii, USA, CC BY 2.0, via Wikimedia Commons
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
No rest periodGrows in the ground

Where it grows wild

Grows in wet forest on Pacific high islands. Records suggest it is mostly terrestrial on the forest floor and banks, sometimes low on trunks. Care values are built from the measured climate and what is typical for the genus, because no species-level habitat text was reachable.

Records run from 180 to 1500 m, median 610 m (65 records).

HawaiiVanuatuFijiSamoaCook IslandsSociety IslandsMarquesasTubuai IslandsSanta Cruz Islands

🔒 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. Photo from Wikimedia Commons, used under its CC BY 2.0 licence, unmodified.