It is a prostrate, often mat-forming shrub, that has leaves with 5 to 19 teeth or lobes, and light green or grey, toothbrush-like flowers with reddish striations and a deep red, or dull orange to yellow style.

Grevillea repens is a prostrate trailing, often mat-forming shrub that typically grows up to 3 m (9.8 ft) wide.

Flowering occurs from October to April and the dry fruit is a silky-hairy follicle 10–12 mm (0.39–0.47 in) long.

[3][7] Plants from the eastern region (the Mt Slide form) can reproduce both sexually by seed and clonally by 'root-suckering', and tend to display lower fertility than plants from the western (Daylesford) population which regenerate by seed or by re-shooting from a lignotuber after disturbance events such as fire.

[8] Some clonally reproducing plants in the eastern region have been found to be triploid (three sets of chromosomes) compared to the usual diploid state for this species (2n=20).