Utricularia spinomarginata

A small lithophytic bladderwort described in 2010 and known only from wet cliffs at about 2,000 m on Phu Soi Dao in northern Thailand, where it grows with U. phusoidaoensis. It is told apart by its deeply dissected, yellow-white to pink-white five-lobed flowers and by seeds with spine-like marginal hairs. Nothing is published on its cultivation; treat it as a cool, wet-cliff montane plant, and expect it to be very rare in collections.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

No rest periodGrows on rock (lithophyte)

Where it grows wild

Wet cliff faces at high elevation on Phu Soi Dao, where water seeps over rock and the plants grow in thin moss and silt films on the rock surface.

Around 2,000 m, near the summit area of Phu Soi Dao.

Thailand (Phu Soi Dao, Phitsanulok–Uttaradit border)

🔒 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.