The leaves of Aspalathus acocksii are unstalked or sessile, here appearing whorled on axillary short-shoots.
They are sometimes simple and overlapping, or appearing trifoliolate. The narrowly obovate leaves or leaflets have entire margins and slightly protruding, mucro-like tips. The flat, thickish blades with visible midribs are pale blue-grey, covered in silvery white hairs.
The pale upper bark is peeling in picture from the stem, revealing deeper coloured yellow-brown bark, no longer hairy (Bond and Goldblatt, 1984; JSTOR; iNaturalist).