Euphorbia x martinii
An upright, clump forming evergreen subshrub which has narrow, inversely lance-shaped, mid-green leaves, often tinged purple when young, are borne on red-tinged shoots. From May to July, terminal cymes of yellow-green flowers with dark red nectar glands are borne.
Grow in any reasonably fertile soil in full sun or in full shade. It will reach a height and spread of 1m.