This rhizomatous perennial herb as erect reddish stems and forms a bushy clump. It has blue-green elliptical leaves and the reddish bell-shaped flowers are accompanied by bracts and appear in a  open cluster from early spring to late summer.

Hardiness zones 9 to 11

Euphorbia glauca is naturally found in the North and South Island of New Zealand and the Chatham Islands. It is also found on Norfolk Island and commonly grows on coastal cliffs and banks or on dunes and in rocky places around lakes. it is regarded as rare and threatened in its natural habitat and can be found in a few localised coastal areas. 

It prefers a sunny to semi shaded open to expose position and grows in well-drained moderately fertile sandy-stony soil and is pH adaptable. It is drought and salt laden wind tolerant but frost tender and dislikes wet soils.

The Sea Spurge is grown for its attractive foliage and clumping habit. It is planted in parks and gardens as a specimen and should be contained in a large pot submerged in the soil. It is also planted in coastal gardens and used for sand stabilisation. 

It is suitable for exposed coastal and inland regions and establishes in 2-3 years and is moderately long-lived. This perennial is also grown in patio pots and planter boxes or used in roof gardens requiring little care once established. ID 3239

Euphorbia (ew-FOR-bee-a)  glauca (GLAW-kuh)

Note:
The vigorous roots (runners) are capable of penetrating compacted soils and spread rapidly.

Euphorbiaceae (yoo-for-bee-AY-see-ee)
Spurge Family