Swaziland's Alien Plants Database

Grevillea robusta A. Cunn. PROTEACEAE Australian silky oak Invasive, Potential problem species Origin: Eastern Australia Growth Form: Tree Plant Description: Plant: Large, evergreen tree 18–30 m high with a straight trunk and moderately spreading crown. Leaves: Dark green above, greyish-white or rusty-silky beneath, two-pinnatifid, deeply incised, fern-like, 150–300 mm long, leaflet margins recurved. Flowers: Golden-orange, stalked, 20–30 mm long, in terminal, bottlebrush-like sprays 80–150 mm long, September–November. Fruit: Brownish-black, leathery follicles about 20 mm long, containing one or two flat, winged seeds. Key Features: Control: Comments: Suspected/Possible More information: Weeds & Invasive Plants Home Page Photo - flowers/leaves Green, C. © Australian National Botanic Gardens Photo - tree Fagg, M. © Australian National Botanic Gardens

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