Euphorbia avasmontana Dinter
Slender Candelabra Euphorbia, Mountain Milk-bush, Avas Euphorbia
Euphorbia avasmontana var. avasmontana, Euphorbia hottentota, Euphorbia kalaharica, Euphorbia sagittaria, Euphorbia venenat, Euphorbia volkmanniae
Euphorbia avasmontana is a cactus-like succulent with many branches that arise from the base bunched closely together. It grows up to 6.6 feet (2 m) tall. The columnar stems with 5 to 7 ribs are up to 2.8 inches (7 cm) in diameter. Leaves are small and ephemeral, dropping off very soon. Spines are straight, paired, and up to 0.8 inches (2 cm) long. Flowering appears in short cymes of yellow cyathia.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °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. In fact, more die from too much care and watering than from neglect. Euphorbias need well-draining soil and lots of sunlight. They are not particular about soil pH, but they 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 soil is dry several inches below the surface. Water deeply, but don't let them sit in wet soil, which 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 a few pests and diseases are to be alert for.
See more at How to Grow and Care for Euphorbia.
This species is native to Namibia and South Africa.
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