Prostanthera cuneata (alpine mint bush or rough mint bush) is a species of flowering plant in the family Lamiaceae, native to south-eastern Australia. It is a bushy evergreen shrub with a compact habit, growing to 90 cm (35 in) both in height and width. The leaves have a rounded apex and cuneate base and are 4 to 5 mm long and 3 to 3.5 mm wide. The leaves are strongly aromatic when crushed. Flowers are produced from November to April (mid-spring to mid-autumn) in the species' native range. These are solitary and axillary, and clustered toward the end of the stems. They are 10–15 cm (4–6 in) long, and white with multiple purple to red coloured spots in the throat.