Utricularia steenisii

A tiny annual bladderwort of section Phyllaria, known only from the summits of Gunung Leuser and Gunung Bandahara in Aceh, Sumatra, at 2,500 to 3,200 m. It grows among moss on wet soil and rocks, in open, damp places in Sphagnum bogs fed by seeping ground water, so it needs a cold, wet, bright-but-cloudy highland environment. It is essentially unknown in cultivation.

At home, aim for

Day Cool-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

It grows as a lithophyte or terrestrial among mosses on exposed or shady soil and on rocks. One label records 'mossy forest and blang vegetation, streaming ground water, open damp place in Sphagnum bog'. Blang is the open subalpine heath and grassland on the Leuser summits.

From 2,500 to 3,200 m; specimens are labelled at 2,500, 2,675, 2,700, 2,900 and 3,200 m.

Sumatra

🔒 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.