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Queensland Government
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Queensland Health
Health Services > Queensland Poisons Information Centre

Plants and Mushrooms

Silky Oak

Silky oak tree Leaves of the silky oak tree Flowers of the silky oak tree Close up of flower of the silky oak tree
Category 3 toxicity icon

 Common name   Silky oak
 Botanical name   Grevillea robusta
 Other common names   -
Family   Proteaceae
 General description   A very tall, native tree with furrowed grey bark often cultivated as an ornamental. The timber has been popular for cabinet work and furniture, although is not as commonly used now.
Flowers   The flowers are orange-yellow and occur in dense spikes at the ends of the branches.
Leaves   The leaves measure 15-30cm long, are grey-green in colour and divided into many narrow segments.
 Fruit/Berries   The fruit are woody, ellipsoid in shape, 1.5-2cm long, with a persistent style or stalk at the end of the fruit.
Other   The sap is an irritant.
Symptoms   The sap, sawdust or fresh timber can cause contact dermatitis. The reaction may be delayed several days. The sap or sawdust may cause eye irritation.
Toxicity category   3
Warning   For all eye exposures rinse the eye with water for 15 minutes. Seek medical assistance if irritation persists.


Last Updated: 18 August 2009
Last Reviewed: 18 August 2009