Euphorbia micracantha

OriginEuphorbia micracantha is native to South Africa, primarily distributed across the Eastern Cape Province. It is found in regions including Albany, Bathurst, and extending toward the Great Fish River valley.

Habitat In its natural environment, this species thrives in stony, grass-covered areas and semi-arid shrublands. It is a geophyte, often growing with its substantial tuberous rootstock buried underground to survive periods of drought and seasonal fires. It is well-adapted to well-drained, mineral-heavy soils and grows alongside other xerophytic vegetation.

DescriptionEuphorbia micracantha is a dwarf, spiny succulent perennial prized for its "clump-forming" habit and subterranean caudex.

• Rootstock: It develops a thick, fleshy, and tuberous rootstock (caudex) that can grow up to 5 cm thick. In cultivation, this is often raised above the soil to create a bonsai-like appearance.

• Stems: The plant produces numerous 4-angled (rarely 3 or 5-angled) branches that emerge from the top of the rootstock. These branches are typically 10–15 cm long and about 1 cm thick, featuring a vibrant green to grayish-green color with distinct wavy margins.

• Spines: As the name "micracantha" (meaning small thorns) suggests, it bears very small, paired spines (2–4 mm long) along the ridges of the stems. The spines are reddish-brown when young, turning gray with age.

• Flowers (Cyathia): It produces small, solitary greenish-yellow cyathia on short peduncles at the tips of the branches. Flowering typically occurs in late spring or summer.

• Cultivation: This is a hardy and slow-growing species. It requires full sun to bright light and a strictly mineral, well-draining substrate. Watering should be moderate in summer and kept dry in winter.