This variable shrub to large tree has a short gnarled trunk with spreading branches that form a broad rounded crown. It has dark green oval leathery leaves and the bright red cup-shaped flowers appear in a dense cluster from late spring to summer.

Hardiness zones 9 to 11

Metrosideros excelsa is commonly known as Pohutukawa and is naturally found in New Zealand growing along coastal fringes. 

It prefers a well drained sandy soil but will tolerate most soils in an open to exposed sunny position and tolerates mildly frost, drought and salt laden winds.

The New Zealand Christmas Bush is grown for its rounded crown and flowers. It is planted along borders for screening or shade in parks or large gardens. It is suitable for coastal regions tolerating expose conditions and establishes in 3-5 years and is long lived. This tree will tolerate regular pruning to form a large hedge requires little maintenance once established tolerating a wide range of conditions. ID 329

Note:
In its natural habitat the tree becomes larger and broad with a short trunk that forms aerial roots.  

Metrosideros (may-trō-SID-er-os) excelsa (eks-KEL-sa)

From Greek metra, “heartwood”, + sideros, “iron” (referring to the wood’s hardness); “excelsa”, Latin word meaning “to rise above” (referring to the high, dense crown).

Myrtaceae (mir-TAY-see-ee)
Myrtle, Eucalyptus, Clove and Guava Family