Arum nigrum

The Balkan black arum is a tuberous Mediterranean aroid with glossy arrow-shaped leaves and a near-black spathe in spring. It grows from autumn to late spring and goes dormant in the hot, dry summer, so treat it as a cool-season bulb: moist and bright in winter, dry in summer.

At home, aim for

Day Cool-growingTargets in Plantistry

Night Close to the dayTargets in Plantistry

Humidity Ordinary room humidityBand in Plantistry

Light Dappled lightDLI and PPFD in Plantistry

Expects a seasonal restGrows in the ground

Where it grows wild

Garrigue scrub, rocky hillsides and soil pockets among rocks, often in the shade of shrubs. Light detail is inferred from the genus.

Elevation is not well recorded; the single measured site is at about 408 m.

GreeceNW. Balkan Pen.

🔒 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 Arum

Arum italicum Arum maculatum Arum cyrenaicum Arum korolkowii Arum palaestinum Arum rupicola Arum cylindraceum Arum idaeum Arum creticum Arum hygrophilum Arum orientale Arum concinnatum All 27 →

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-SA 3.0 licence, unmodified.