Grevillea hookeriana

Distribution Map
Family: Proteaceae
Distribution: Widespread in heath and shrubland in the south-west of Western Australia.
Common Name: No generally accepted common name.
Derivation of Name: Grevillea... After Charles Francis Greville, co-founder of the Royal Horticultural Society
hookeriana... After William Hooker, director of the Royal Botanic Gardens, Kew during the early 1800s.
Conservation Status: Not considered to be at risk in the wild.

General Description:

Grevillea hookeriana is typical of the "toothbrush"-flowered grevilleas where the individual flowers are arranged in a terminal one-sided raceme. It is a fairly variable species and may be revised as a result of future research.

Grevillea hookeriana is usually a medium shrub which can reach 2.5 metres high by a similar width. However, some forms have a much lower growth habit. The leaves are up to 12 cm long and may be entire or deeply lobed with narrow segments. Flowers occur in toothbrush-shaped clusters at the ends of the branches in winter to spring. The flower colour varies from dark red to almost black.

Grevillea hookeriana
 
Grevillea hookeriana
Two forms of Grevillea hookeriana
Photos: Murray Fagg and Denise Greig - Australian National Botanic Gardens

There is some confusion regarding G.hookeriana in the horticultural trade. A plant with bright red toothbrush flowers has been sold under this name for many years. However, it has been established that this is a plant of hybrid origin which may or may not have G.hookerana in its parentage. This plant is now more commonly available as Grevillea 'Red Hooks'. The true G.hookeriana is mainly cultivated by enthusiasts and is less hardy than the hybrid plant, particularly in areas with humid summer climates. It requires well drained soils in sunny or semi-shaded situations. It tolerates extended dry periods once established and is tolerant of at least moderate frosts.

Propagation is best carried out from cuttings of firm, current seasons growth which strike reasonably reliably. Seed may be successful but is not readily available.


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