It has rough, fibrous bark on the trunk and all but the thinnest branches, broadly lance-shaped to egg-shaped adult leaves, flower buds in groups of seven, yellowish green flowers and cup-shaped to cylindrical fruit.Eucalyptus grossa is a mallee, rarely a straggly tree or sometimes a shrub, that grows to a height of 0.5–5 m (1 ft 8 in – 16 ft 5 in) and forms a lignotuber.

[2][3][4] Eucalyptus grossa was first formally described in 1867 by George Bentham in Flora Australiensis from an unpublished description by Ferdinand von Mueller.

[5][6] The specific epithet (grossa) is from the Latin grossus, meaning 'thick' or 'coarse', referring to the leaves, buds and fruit.

This eucalypt is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.

[2] This species has ornamental flowers and can be maintained as a dense, compact shrub if regular pruning is undertaken.