Granite outcrops in a restricted location in the New England area of New South Wales.
However, regarded as vulnerable as it occurs over a very restricted range. As a member of the Lamiaceae, Prostanthera is related to a number of culinary herbs such as mint, thyme, oregano and sage. Prostanthera teretifolia is usually a small shrub up to 1 metre high but occasionally may reach 2 metres. Leaves are linear and rounded in cross-section and up to 15mm long. They are grey-green in colour and highly aromatic.