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Grevillea robusta

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Kingdom  Plantae
Family  Proteaceae
Scientific name  Grevillea robusta
Rank  Species
Order  Proteales
Genus  Grevillea
Higher classification  Spider flower
Grevillea robusta Grevillea robusta Silky Oak
Similar  Spider flower, Proteas, Grevillea banksii, Bottlebrushes, Casuarina

Plant id silky oak grevillea robusta

Grevillea robusta, commonly known as the southern silky oak, silk oak or silky oak, or Australian silver oak, is the largest species in the genus Grevillea of the family Proteaceae. It is not closely related to the true oaks, Quercus. It is a native of eastern coastal Australia, in riverine, subtropical and dry rainforest environments receiving more than 1,000 mm per year of average rainfall.


Grevillea robusta Grevillea robusta

Silky oak grevillea robusta


Grevillea robusta Grevillea robusta Noosa39s Native Plants

It is a fast-growing evergreen tree, between 18–35 m (59–115 ft) tall, with dark green delicately dented bipinnatifid leaves reminiscent of a fern frond. It is the largest plant in the Grevillea genus, reaching trunk diameters in excess of 1 m (3 ft). The leaves are generally 15–30 cm (6–12 in) long with greyish white or rusty undersides.

Grevillea robusta Grevillea robusta

Its flowers are golden-orange bottlebrush-like blooms, between 8–15 cm (3–6 in) long, in the spring, on a 2–3 cm long stem and are used for honey production. Like others of its genus, the flowers have no petals, instead they have a long calyx that splits into 4 lobes. The seeds mature in late winter to early spring, fruiting on dark brown leathery dehiscent follicles, about 2 cm long, with one or two flat, winged seeds.


Grevillea robusta Grevillea robusta Silky Oak Leafland

Before the advent of aluminium, Grevillea robusta timber was widely used for external window joinery, as it is resistant to wood rot. It has been used in the manufacture of furniture, cabinetry, and fences. Owing to declining G. robusta populations, felling has been restricted.

Grevillea robusta Grevillea robusta Silky Oak Leafland

Recently G. robusta has been used for side and back woods on guitars made by Larrivée and others, because of its tonal and aesthetic qualities.


Grevillea robusta httpsuploadwikimediaorgwikipediacommonsthu

When young it can be grown as a houseplant where it can tolerate light shade, but prefers full sun as it grows best in warm zones. If planted outside, young trees need protection on frosty nights. Once established it is hardier and tolerates temperatures down to −8 °C (18 °F). It needs occasional water but is otherwise fairly drought-resistant.

Grevillea robusta is often used as stock for grafting difficult-to-grow grevilleas.

Care needs to be taken when planted near bushland as it can be weedy.

The tree has been planted widely throughout the city of Kunming in south-western China forming shady avenues.

This plant has gained the Royal Horticultural Society's Award of Garden Merit.

Grevillea robusta Birds of Australia key plants Grevillea

G. robusta is also grown in plantations in South Africa and can also be grown alongside maize in agroforestry systems.

G. robusta is naturalized in Hawaii, with invasive tendencies.

Toxicity and allergic reactions

The flowers and fruit contain toxic hydrogen cyanide. Tridecylresorcinol in G.robusta is responsible for contact dermatitis.

Grevillea robusta Grevillea Robusta Southern Silky Oak Tree 10 Seeds


Grevillea robusta Wikipedia

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