Euphorbia virosa is a leafless, spiny succulent from the Namib and dry regions of southern Africa, forming a short twisted trunk with angular green branches. It needs very sharp drainage, strong light and minimal water, and its milky sap is highly irritating and poisonous.
Family
Euphorbiaceae (Spurge family)
Grows as
Tree, Succulent
Light
Full sun
Water
Water sparingly during the warm growing season and keep almost dry in winter.
Soil
Very free-draining gritty cactus or succulent mix.
Temperature
15–35 °C; protect below 5 °C
How easy
Moderate
Safety
Toxic: The milky white sap in the branches is highly poisonous and irritating; it can cause severe skin irritation and blindness if it gets into the eyes.
Native range
SW. Angola to NW. Cape Prov.
Climate
desert or dry shrubland
About
Euphorbia virosa, the Gifboom or poison tree, is a plant of the spurge family Euphorbiaceae. It has a short main stem, usually twisted, from which 5–10 cm branches emerge. These leafless branches have 5 to 8 edges. Paired thorns grow in regularly spaced intervals from the edges.
Euphorbia virosa is commonly distributed from the Orange River in South Africa to Southern Angola, and occurs throughout the Namib Desert, mainly on rocky slopes. The plant contains within the branches a milky and creamy substance with carcinogenic properties. This substance is very poisonous and is used by San (Bushmen) to dip the tips of their hunting arrows. Contact with it causes skin irritation, and if the eyes are afflicted, blindness may occur.
Text excerpted from the Wikipedia article Euphorbia virosa 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.