Scientific Name
Euphorbia ingens E. Mey. ex Boiss.
Common Name(s)
Candelabra Tree, Common Tree Euphorbia, Cactus Euphorbia, Cactus Spurge
Synonym(s)
Euphorbia similis
Scientific Classification
Family: Euphorbiaceae
Subfamily: Euphorbioideae
Tribe: Euphorbieae
Subtribe: Euphorbiinae
Genus: Euphorbia
Etymology
The specific epithet "ingens" (pronounced "IN-gens") means "huge, vast, enormous" and refers to the massive size of this species.
Origin
Euphorbia ingens is native to dry areas of southern Africa.
Description
Euphorbia ingens is a succulent tree with a short trunk and dark green branches that form a rounded crown often shaped like a balloon. It can grow up to 40 feet (12 m) tall. The branches have 4 or 5 vertical ridges that bear small spines.
From fall to winter, mature plants produce greenish-yellow flowers at the tips of the branches. The fruits are round, 3-lobed capsules that turn from green to red to purple as they ripen.
Hardiness
USDA hardiness zones 10a to 11b: from 30°F (-1.1°C) to 50°F (10°C).
How to Grow and Care
Euphorbias are very easy to care for. These plants require a little pampering to become established, but once they are, they are self-sufficient. More die from overcare and watering than from neglect. Euphorbias need well-draining soil and ample sunlight. They are not particular about soil pH but cannot tolerate wet soil. Unlike most succulents, Euphorbia does not handle long periods of drought well. It may need weekly watering during the summer. Water whenever the top 6 inches of soil are dry. Water deeply, but avoid letting them sit in wet soil, as this can cause root rot. Add some organic matter or fertilizer to the planting hole. Feed with a half-strength fertilizer monthly if you are growing them in containers or your soil is poor.
These succulents can be grown from seed, but they can be difficult to germinate (or even find). They are usually propagated by cuttings. This can be tricky because of the exuding sap. Rooting hormone is recommended with Euphorbias. They tend to grow problem-free, but there are a few pests and diseases to be alert for.
Learn more at How to Grow and Care for Euphorbia.
Links
- Back to genus Euphorbia
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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