Grevillea robusta

Proteaceae

Silky Oak

Evergreen tree to 30m high by 10m wide. The leaves are 15-20cm long, fern-like and deeply divided with silver undersides. Silky Oaks shed their leaves in late spring prior to the emergence of golden, 10-15cm long, toothbrush-like inflorescences in early summer.

Uses

Ornamental tree suitable for parks and larger gardens. The timber is used for furniture making and it is commonly used as a rootstock for difficult to grow Grevillea species.

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Culture

Suitable for full sun in temperate and sub-tropical climates. Prefers well-drained, slightly acidic soils, but will tolerate a wide range of soil conditions and unlike most Grevilleas, does not suffer from phosphorous toxicity. Frost tolerant once established. Propagate from seed.

Propagation

Seed

Cultivars

No information available at this time...

Plant Health

Minimal problems. Root rot in badly drained soils, occasional scale and sooty mould.

More info

Video: ‘Identifying Trees and Shrubs’ produced by Australian Correspondence Schools is available through http://www.acsgarden.com/shop/ CDROM:‘Trees and Shrubs for Warm Places’ by John Mason is available through http://www.acsgarden.com/shop/ Book: ‘The Native Plant Expert’ by John Mason is available through http://www.acsgarden.com/shop/ Videos: ‘Australian Native Plants’ and ‘Australian Native Flowering Plants’ are available through http://www.acsgarden.com/shop/ CDROM: ‘Growing Australian Native Plants’ is available through http://www.acsgarden.com/shop/