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Species library › Asplenium › Asplenium dimorphum
Ferns Partly documented

Asplenium dimorphum

Norfolk Island spleenwort

A spleenwort endemic to Norfolk Island in the south-west Pacific, belonging to the Neottopteris group of Asplenium with somewhat leathery fronds; its closest relative is the coastal A. difforme. As its name suggests the fronds are dimorphic. Little habitat detail is in the sources available, so care is based on Norfolk Island's mild, humid subtropical climate.

Asplenium dimorphum
Photo: Daderot, Public domain, via Wikimedia Commons
At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light ShadeDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Norfolk Island's remaining native vegetation is subtropical rainforest dominated by Norfolk Island pine, palms and tree ferns, now mostly within the national park. The species is assumed to grow in the shade of this forest; its exact niche (ground, rock or tree) was not confirmed in the sources available.

Norfolk Island rises only to 319 m at Mount Bates, so all sites are at low elevation.

Norfolk Island

🔒 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 Public domain licence, unmodified.