Silky Oak
Grevillea robusta
Grevillea Robusta (Silky Oak) is a grand, fast-growing evergreen tree native to the subtropical and tropical rainforest coastlines of eastern Australia. It is the largest species in the Grevillea genus, producing fern-like, dark-green foliage with silky bronze undersides, topped by spectacular, golden-orange toothbrush-like flower clusters in spring that attract native birds.
Native Origin & Climate
Coastal rainforests and riverbanks of eastern New South Wales and Queensland. Fully adapted to coastal and temperate Australia.
Expert Pruning Tip
Pruning is generally not required for mature garden trees. For container specimens, pinch growing tips in spring to control height.
In-Situ Environment
Urban Botanics Art
Botanical Blueprint
Localized Australian Care Taxonomy
Beginner Friendly. Extremely hardy once established in gardens. Resilient against wind, drought, and light coastal breezes.
Full sun. Requires at least 6 hours of direct sun daily to produce strong, vibrant flowers. If grown in shade, it will not bloom well.
Low. Water regularly while establishing. Once mature, it is highly drought-tolerant and survives easily on rainfall alone.
Deep, rich, and well-draining soil. In containers, use a native-specific potting mix (low phosphorus is essential).
Adapts well to temperate, Mediterranean, and subtropical climates. Can tolerate light frost. Avoid high-humidity indoor rooms.
Sowing seeds or cuttings in spring. Seedlings grow quickly. Cuttings require rooting hormone and bottom warmth.
Grand, upright, and wild. Rosettes of leaves topped by massive golden-orange flower spikes. High architectural scale.
Outdoors in large gardens, native landscape beds, or as a massive centerpiece feature in coastal backyards.
Outdoor
Safe:Non-toxic to cats, dogs, and children. A proud, safe Australian native flora choice for backyards.
Local Availability
Compare prices from leading Australian nurseries
Bunnings Warehouse
Flower Power
* Aussie Botanica is supported by our readers. When you click our links to nurseries, we may earn a small referral commission at no additional cost to you. Stock levels are estimated and subject to local store variations.