Drosera slackii

Drosera slackii is a perennial rosette sundew endemic to the mountains of the southwestern Western Cape, South Africa. Its flat rosettes, 5–10 cm across, are deep red to purple, with pink flowers. It grows in permanently wet, peaty seepages and stream-side marshes in fynbos, and is an easy, rewarding plant given strong sun, pure water and a cool winter, earning the RHS Award of Garden Merit.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Dry airBand in Plantistry

Light Full sunDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

It grows in wet, peaty soils in seepage marshes and along mountain streams in fynbos, often in clumps. Observers record it as locally common in very wet ground by rivers and in wetlands near mountain huts. Fynbos burns every decade or two, and plants regrow quickly after fire.

Only one record has an elevation (500 m). Its range, the coastal mountains around Hermanus, Kleinmond and the Palmiet River, runs from a few hundred metres up to about 1,000 m.

South Africa: Western Cape

🔒 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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More Drosera

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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 3.0 cz licence, unmodified.