Euphorbia lydenburgensis is a hardy, evergreen, much-branched spiny succulent shrub which develops a flat crown. It has 4-angled, thin, greenish yellow branchlets with dark-brown spines running along the ridges.
It bears small, bright yellow flowers, also along the ridges with the spines from September to November. The flowers attract tiny pollinating insects.
Plant in a succulent bed, rockery or container. It requires well-drained soil and place in sun or very light dappled shade.
Size: 0.6 to 1.5 meter.