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Rock Barrelwort

Euphorbia heptagona

Rock Barrelwort
Photo: Chino, CC0

Rock Barrelwort (Euphorbia heptagona) is a spiny, cactus-like succulent subshrub from South Africa that forms dense clusters of ribbed stems. It thrives in full sun and very well-drained soil, and needs little water.

Family
Euphorbiaceae (Spurge family)
Grows as
Succulent
Light
Full sun
Water
Water deeply then let the soil dry out fully between waterings; reduce sharply in winter.
Soil
Fast-draining cactus or succulent mix with grit or pumice.
Temperature
15–30 °C; protect below 5 °C.
How easy
Easy
Safety
Toxic: All parts exude a toxic white latex when damaged, which can irritate skin and eyes and is harmful if swallowed.
Native range
Cape Prov.
Climate
subtropical

About

Euphorbia heptagona, sometimes referred to as the milk barrel or pincushion euphorbia, is a subtropical succulent species of flowering plant in the genus Euphorbia native to South Africa. The species is also grown as a houseplant.

Where it grows

Native to South Africa, Euphorbia heptagona commonly grows in the Eastern Cape and Karoo regions.

Other Euphorbia plants

Abd Al Kuri Euphorbia · Desert Candle · Greek Spiny Spurge · Euphorbia actinoclada · Miniature Saguaro · Pincushion Euphorbia · Euphorbia alcicornis · Euphorbia alfredii · Euphorbia ambarivatoensis · Euphorbia ambovombensis · African candelabra · Euphorbia ampliphylla

Text excerpted from the Wikipedia article Euphorbia heptagona 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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