It is a spreading shrub with small oval or egg-shaped leaves and pale pink flowers arranged in leaf axils.

The flowers are pale pink to white with five sepals, five more or less circular petals and ten stamens.

[2][3][4][5] This species was first formally described in 1832 by Joseph Dalton Hooker in the Botanical Magazine and given the name Baeckea saxicola from an unpublished description by Allan Cunningham.

[6][7] In 1844, Johannes Conrad Schauer changed the name to Thryptomene saxicola in the journal Plantae Preissianae.

[10] Thryptomene saxicola grows on granite outcrops and on hills in the Avon Wheatbelt, Esperance Plains, Jarrah Forest and Warren biogeographic regions of south-western Western Australia.