Euphorbia umfoloziensis R.G.Peckover
Euphorbia umfoloziensis is a dwarf succulent with the main stem and root, forming a large subterranean tuberous body. The stem crowns the root, often branched laterally to form multiple heads and is distinguished from it by horizontally extended depressions from which old branches have fallen. The branches are up to 3.2 inches (8 cm) long, up to 1.6 inches (4 cm) thick, constricted at intervals, 3-, 4- or 5-angled, not twisted, simple, bluish-green with lighter green markings. It has prominent tubercles with a pair of spines and a rudimentary leaf at the apex. Spines are slender, up to 0.4 inches (1 cm) long, reflexed, or slightly V-shaped and with or without basal prickles. The cymes are produced only on new growth, one from each flowering eye consisting of 1 cyathium.
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 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. If you are growing them in containers or your soil is poor, feed with a half-strength fertilizer monthly.
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.
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