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Species library › Asplenium › Asplenium haleakalense
Ferns Little published: much of this is inferred from related species

Asplenium haleakalense

Asplenium haleakalense is a small Hawaiian spleenwort described by W. H. Wagner in 1999, related to the Asplenium trichomanes group. GBIF records place it on the upper slopes of Haleakalā on Maui and on the high saddle of Hawaiʻi Island, where it tucks into shaded cracks in lava and cinder. Treat it as a cool montane rock fern: bright shade, cool nights, and moist but fast-draining crevice conditions.

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

Recorded sites are on high volcanic slopes, where small spleenworts of this group grow in shaded crevices and pockets of lava rock, sheltered among subalpine shrubland. Habitat details beyond the locality are not published in sources we could reach.

No elevations are recorded with the GBIF points; the coordinates on Haleakalā and the Mauna Kea–Mauna Loa saddle suggest roughly 1,800–3,000 m.

Hawaii

🔒 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.