Grevillea preissii is a mounded to spreading shrub that typically grows to a height of or a dense, erect shrub to and usually has woolly- or shaggy-hairy branchlets. The leaves are long and divided, usually with 5 to 7 linear to more or less cylindrical lobes long and wide. The edges of the leaves are rolled under, obscuring most of the lower surface. The flowers are arranged in groups of 12 to 30 on one side of a rachis long and are red, orange-red or pinkish red, the pistil long. Flowering mainly occurs from May to October and the fruit is an oval follicle about long.
