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Species library › Drosera › Drosera arachnoides
Carnivorous Little published: much of this is inferred from related species

Drosera arachnoides

A small sundew described in 2020 from eastern Madagascar, known from very few sites, and close to Drosera humbertii. Plants form short stems 2.5-4.5 cm tall with leaves 2-4 cm long. Almost nothing is published on its ecology or cultivation, so the advice here is inferred from its locality and from related Malagasy sundews.

At home, aim for
Day Warm-growingTargets in Plantistry
Night Close to the dayTargets in Plantistry
Humidity Ordinary room humidityBand in Plantistry
Light Bright, filtered lightDLI and PPFD in Plantistry
No rest periodGrows in the ground

Where it grows wild

Collections come from the Forêt de Vohibe near Vatomandry, at the top of the Tsitondroina waterfall. The microhabitat is not described in the records found, but sundews there most likely grow on wet, open ground or rock near the falls rather than under closed forest.

Herbarium records cluster at about 650-725 m.

Madagascar

🔒 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.