Plants are usually shrubs, rarely trees with leaves in opposite pairs.

Plants in the genus Prostanthera are usually shrubs or subshrubs, rarely trees, with leaves arranged in opposite pairs.

The flowers are arranged in panicles in leaf axils or on the ends of branchlets with bracts and bracteoles at the base.

[7] Prostanthera species are used as food plants by the larvae of hepialid moths of the genus Aenetus including A. eximia and A. ligniveren.

[8][9][10] The following is a list of species accepted at the Australian Plant Census as at August 2020:[11]