Prostanthera teretifolia, commonly known as turpentine bush,[2] is a species of flowering plant in the family Lamiaceae and is endemic to a restricted area of New South Wales.

It is an erect to spreading, aromatic shrub with more or less cylindrical leaves and bluish-purple flowers.

Prostanthera teretifolia is an erect to spreading, aromatic shrub that typically grows to a height of 0.3–1 m (1 ft 0 in – 3 ft 3 in) with branches that are densely hairy and glandular.

[2][3] Prostanthera teretifolia was first formally described in 1908 by Joseph Maiden and Ernst Betche in the Proceedings of the Linnean Society of New South Wales.

[4][5] Turpentine bush grows in open and exposed areas amongst granite outcrops near Torrington on the Northern Tablelands of New South Wales.