It is a shrub with a leafy base, mostly linear leaves and conical groups of bright yellow flowers on long canes above the foliage.

The flowers are green in bud, later bright yellow and woolly-hairy, the pistil 14.5–22 mm (0.57–0.87 in) long.

[3][6][4][7] Grevillea eriostachya was first formally described in 1840 by John Lindley in A Sketch of the Vegetation of the Swan River Colony.

[1] Because of the sweet taste of the shrub's flowers, Aboriginal Australians used it as a sweetener and to add variety to their meals.

It has an extremely wide distribution, is common, has a stable population and is not facing any major threats, either at present or in the near future.