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Devil's-pepper

Rauvolfia sandwicensis

Also called Hao

Devil's-pepper
Photo: Forest & Kim Starr, CC BY 3.0

Devil's-pepper (hao) is a small shrub or tree endemic to Hawaii, growing in coastal and mesic forests. It is a rare native and is not a common garden plant.

Family
Apocynaceae (Dogbane family)
Grows as
Tree, Shrub
Light
Part shade
Water
Water regularly while establishing, then moderately, letting the top of the soil dry slightly between waterings.
Soil
Well-drained, fertile forest-type soil or loam.
Temperature
18–30 °C; protect below 10 °C
How easy
Moderate
Safety
Toxic: Contains alkaloids (such as ajmalicine and tetraphylline); the wood can produce poisonous smoke when burned, so avoid burning it.
Native range
Hawaiian Is.
Climate
wet tropical

About

Rauvolfia sandwicensis, the devil's-pepper, also known as hao in the Hawaiian language, is a species of flowering plant in the milkweed family, Apocynaceae, that is endemic to Hawaii. It is a shrub, a small tree reaching 6 m (20 ft) in height, or, rarely, a medium-sized tree up to 12 m (39 ft) tall with a trunk diameter of 0.3 m (0.98 ft). Hao inhabits coastal mesic and mixed mesic forests at elevations of 100–500 m (330–1,640 ft).

Other Rauvolfia plants

Rauvolfia mannii · Rauvolfia media · Rauvolfia micrantha · Rauvolfia nukuhivensis · Rauvolfia sachetiae · Serpentine wood · Rauvolfia sumatrana · Be still tree · Rauvolfia verticillata · Poison devil's-pepper · Devil's-pepper

Text excerpted from the Wikipedia article Rauvolfia sandwicensis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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