Common Name(s): Silk Oak

Synonym(s):

Family: Proteaceae

Native To: Southern and eastern Australia

Native Habitat: Forest areas from sea level to about 3,000 ft

Growth Habit: Large, vertical evergreen tree

Flowering: Showy orange-yellow flowers in the spring

Distinguishing Characteristics: This massive tree reaches heights of 75 feet or more with a 25 foot spread. The crown is pyramidal to oval shape, developing a thick trunk and several heavy horizontal limbs. The light, ferny leaves are gray-green above and silvery beneath. They are 2 to 4 inches long and pinnate. Although this is an evergreen, a great quantity of leaves fall in the spring but are immediately replaced with new growth. Large clusters of bright yellow-orange flowers form in the spring. Black, hard, leathery seed capsules follow the flowers.

Natural History and Cultivation Notes: Although this species is commonly referred to as an oak, it is not a true oak.

Ethnobotany: The silk oak is planted in India as a shade tree in coffee and tea plantations. It is also used as a windbreak for several other crops. This large tree with its showy flowers is also planted as an ornamental. It is also used for lumber, especially in its native Australia where it is a valuable timber source. The tree’s wood is also used for poles and rafters.

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