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Species library › Utricularia › Utricularia arenaria
Carnivorous Well documented

Utricularia arenaria

Utricularia arenaria is a tiny annual terrestrial bladderwort of seasonally wet sandy and peaty grasslands across tropical and southern Africa. It germinates with the summer rains, flowers with small violet to reddish-purple spurred flowers, sets seed and dies as the ground dries. In cultivation it is grown from seed each season in constantly wet sand and peat under strong light.

Utricularia arenaria
Photo: fischermans, CC BY-SA 3.0, via Wikimedia Commons
At home, aim for
Day IntermediateTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Full sunDLI and PPFD in Plantistry
Expects a seasonal restGrows in the ground

Where it grows wild

A terrestrial annual in damp sandy or peaty soils in swampy grassland, marshes and seepages, often among sedges and grasses in open country.

From near sea level to about 2,400 m.

Tropical Africa (about 20 countries, e.g. Angola, Kenya, Rwanda, Zimbabwe, Mozambique)Southern Africa (South Africa: Gauteng, Mpumalanga, Limpopo)MadagascarIndia (Madhya Pradesh, one collection)

🔒 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. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.