Crassula drummondii

Drummond's pygmyweed

A tiny annual pygmyweed (formerly Tillaea drummondii) of open, seasonally damp sandy or gravelly ground in Texas and the southern Great Plains, with disjunct populations in temperate South America. It germinates in the cool, wet part of the year, flowers and seeds within a few months, and dies as the ground dries and heats up.

At home, aim for

Day Cool-growingTargets 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

Bare patches of sand, gravel and thin soil over rock, vernal seeps and disturbed open ground that stay wet for a few weeks after cool-season rain. Habitat described from the genus's New World annuals; species-specific detail was not reachable.

Lowland: the measured sites lie between sea level and about 200 m.

TexasKansasColoradoSouth CarolinaArgentina NortheastArgentina NorthwestChile CentralParaguayUruguay

🔒 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.