Utricularia determannii

A very small rheophytic bladderwort known only from its type locality in the Wilhelmina Mountains of Suriname, where it grows on bare granite in dripping water. It is one of only two species in section Choristothecae, set apart by its pollen, trap glands and anthers. Almost nothing is known about it in cultivation, so care advice is extrapolated from its habitat.

At home, aim for

Day Warm-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Very humid airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

No rest periodGrows on rock (lithophyte)

Where it grows wild

Bare granite rocks kept wet by dripping or flowing water, as a rheophyte, in forested mountains of the Guiana Shield.

Recorded up to about 900 m.

Suriname

🔒 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.