Utricularia petersoniae

A small annual bladderwort endemic to Guerrero, Mexico, described by Peter Taylor in 1986. It grows as a lithophyte in the Sierra Madre del Sur around Puerto del Gallo and Cerro Teotepec at roughly 2,900–3,500 m, in open pine–fir forest. Grow it cool, bright and wet, and re-sow it each season.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

Expects a seasonal restGrows on rock (lithophyte)

Where it grows wild

Lithophytic on wet rocks in open pine–fir forest in the high Sierra Madre del Sur.

Most labelled records are 2,940–3,500 m; isolated records at 19 m and 300 m are almost certainly errors.

Mexico

🔒 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.