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Species library β€Ί Asplenium β€Ί Asplenium densum
Ferns Well documented

Asplenium densum

Dense spleenwort

A small Hawaiian rock spleenwort described by Brackenridge from the U.S. Exploring Expedition, allied to the maidenhair spleenwort (A. trichomanes) and often treated as A. trichomanes subsp. densum. It grows in crevices of lava in the subalpine zone of Haleakalā and Mauna Kea, where days are cool, nights are chilly and the light is strong.

At home, aim for
Day Cool-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Bright, filtered lightDLI and PPFD in Plantistry
No rest periodGrows on rock (lithophyte)

Where it grows wild

Crevices and sheltered cracks in lava flows and cinder in open subalpine shrubland on the high volcanoes.

Records span 76–3962 m, median about 2130 m; the habitat is subalpine.

Hawaii (Maui, Hawaii Island)

πŸ”’ Growing it like that

The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:

βœ“ Day and night temperature targets, and the limits it tolerates
βœ“ Humidity band, and how to hold it
βœ“ Light as DLI and PPFD for a grow light
βœ“ Wet and dry seasons, and whether to rest it
βœ“ Substrate and airflow
βœ“ A step-by-step setup to grow it like the wild

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More Asplenium

Asplenium platyneuron Asplenium bradleyi Asplenium pinnatifidum Asplenium resiliens Asplenium rhizophyllum Asplenium montanum Asplenium scolopendrium Asplenium tutwilerae Asplenium ceterach Asplenium monanthes Asplenium nidus Asplenium septentrionale All 1023 β†’

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