Euphorbia submamillaris (A.Berger) A.Berger
Euphorbia cereiformis var. submamillaris
Euphorbia submamillaris is a dwarf, densely branched, succulent shrub, up to 8 inches (20 cm) tall, forming compact clumps. The stems are 7- to 10-ribbed and deeply grooved between, up to 4 inches (10 cm) long and up to 1 inch (2.5 cm) in diameter. Leaves are tiny, lanceolate, green, rudimentary, only at the top of the new branch and soon deciduous. The spines are indeed solitary sterile peduncles, up to 0.8 inch (2 cm) long. Flowers are wine-red, 0.2 inch (5 mm) in diameter, solitary clustered at the end of the branches.
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 tolerant 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… – See more at: How to Grow and Care for Euphorbia
Euphorbia submamillaris is native to South Africa (Cape Province).
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