Nepenthes rigidifolia

A critically endangered Sumatran pitcher plant known from a tiny area near Sidikalang in North Sumatra, at about 1000–1600 m. Its stiff leaves carry small, very dark lower pitchers (black, brown or purple with pale flecks) and larger ovoid upper pitchers. It is an intermediate grower: warm days, mild nights and constant high humidity.

At home, aim for

Day IntermediateTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Humid airBand in Plantistry

Light Bright, filtered lightDLI and PPFD in Plantistry

No rest periodGrows in the ground

Where it grows wild

It grows as a terrestrial plant in lower montane forest and scrub, on rocky slopes and road banks. Young plants sometimes grow as lithophytes on rock outcrops. The best-known population sits on a roadside embankment rather than inside a reserve, so it lives in open, disturbed ground with broken shade from shrubs.

Recorded at about 1000–1600 m. The two measured sites are at 1013 m and 1131 m, the lower end of that range.

Indonesia (North 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.