Common name: Diels Grevillea


Grevillea dielsiana attracting bees. Photo: D. Blumer.View image slideshow

Origin of Scientific Name

Grevillea - after Charles Francis Greville (1749 - 1809), one of the founders of the Horticultural Society, now the Royal Horticultural Society.

dielsiana - in honour of F. Ludwig E. Diels (1874 - 1945), a distinguished German botanist who visited WA in 1900-01 and described many grevilleas.


Grevillea dielsiana is a compact medium shrub approximately 1.5–2 metres in height found in the northern sandplains from Geraldton almost to Shark Bay and inland to Mullewa among low, thick scrub in yellow sand or gravelly sand over loam.

Diels Grevillea has angular and intertwined branches and branchlets with light green leaves that are narrow, stiff and divided into prickly, pungent lobes. But like all grevilleas it is the flowers that are the main event. From March to November, large conspicuous flowers appear in abundance at the ends of the branchlets. These flowers vary in colour from yellow to orange to red and are followed by oblong-ellipsoidal fruit.

G. dielsiana has much to offer as a cultivated plant. The one drawback for the home gardener is the plant’s very prickly foliage; however, this characteristic is useful for providing refuge for small birds, and combined with the brilliant display of brightly coloured flowers in the winter ensures nectar feeding birds are attracted to your garden and offered protection from prey.

Horticultural tips

  • Best grown from seed using the 'nicking technique' which enhances germination.
  • Prefers a full sun position and will tolerate a wide range of acidic soils, including clay loam, provided drainage is unimpeded.
  • Plants need tip pruning from an early age to develop a bushy habit.
  • Lightly prune after flowering.
  • Require minimal summer watering once established.

For more horticultural tips view our Plant Notes section.

View in Kings Park

Visit Kings Park and Botanic Garden to see Grevillea dielsiana at Roe Gardens within the Western Australian Botanic Garden and in the garden bed along Wadjuk Way, opposite the main carpark.

Want more information?

Refer to the profile for this plant on the Department of Biodiversity, Conservation and Attractions' FloraBase online herbarium.

A macro image of Grevillea dielsiana. Photo: D. Blumer. Grevillea dielsiana in the garden bed along Wadjuk Way in Kings Park and Botanic Garden. Photo: D. Blumer.

Naturescape closed February

Rio Tinto Naturescape Kings Park will be closed from Monday, 1 February 2021 until Tuesday, 2 March 2021.

Concert traffic interruptions

Road and carpark closures will occur in Kings Park and Botanic Garden in February-March 2021 due to concert events.

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Farewell and thank you Grady and Lesley

The Botanic Gardens and Parks Authority (BGPA) would like to extend a sincere thank you and farewell to two of our longest serving staff members, Lesley Hammersley and Grady Brand who will retire from the Authority in December 2020.

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