Grevillea robusta

Silkoak, Silky Oak

In Stock: 4.138 lb (Total:4.138lb)
  • Grevillea robusta

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4.14 lb


Germination test:
Cut (Full Seed)
Seeds per lb:
4.14 lb
Collected in:
Crop year:
Min. hardiness zone:
Item ID:

Growing Info

Scarification: Soak in hot tap water, let stand in water for 2 days.
Stratification: none required
Germination: sow seed 3/8" deep, tamp the soil, mulch the seed bed

Other: If hot water does not allow the seed to imbibe, nick the seed carefully and soak again in warm water.|germinates best with diurnally fluctuating temperatures between 70 and 50 degrees F. 

Grevillea robusta, also known as Silky Oak or Silkoak, is a fast-growing evergreen tree that can reach heights of up to 90 ft tall. This Australian native is often planted as a street tree in suitable climates and is highly ornamental, with dark green bipinnatifid fern-like leaves and one-sided, "toothbrush"-like groups of flowers. The flowers are one of the richest sources of nectar and the tree is a valuable source of timber used for external window joinery, furniture, cabinetry, and fences. While it is drought-resistant, it needs occasional watering and prefers full sun in warm zones. However, care should be taken when planting it near bushland as it can be invasive. Grevillea robusta is ideal for those looking for a fast-growing, highly ornamental tree that provides a valuable source of nectar.

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