Prostanthera incisa, commonly known as Cut-Leaf Mint-Bush, is an evergreen shrub native to open eucalypt forests and woodland areas in Southeastern Australia. It typically grows to a height of 1-2 meters and can spread to a similar width. The shrub is characterized by its erect form, strongly aromatic nature, and openly branched structure with hairy, densely glandular branches. Its leaves are egg-shaped to oblong, with distinctive incised margins, giving rise to its common name. The pale mauve to mauve flowers are tubular, spotted with dots, and bloom in spring and early summer, creating a visually appealing display. They are arranged in clusters near the ends of the branches, with early-deciduous bracteoles.

The Cut-Leaf Mint-Bush is valued for its aromatic foliage and attractive flowers, making it suitable for sensory gardens and as a feature plant in residential landscapes. It is also used for essential oil production and as a bushfood spice. The plant’s fast growth rate allows for quick establishment and harvest within the first year if grown for commercial purposes. When pruned back to a height of 50 cm, it readily reshoots, making it manageable in a garden setting. For successful cultivation, it requires sheltered sites with well-drained acidic soils, and while it has reasonable frost tolerance down to −5°C, it is vulnerable to root rot in poorly drained conditions. Propagation is typically achieved through seeds or cuttings from firm young growth. It thrives in full sun to part shade and needs medium amounts of water with medium soil drainage.CC BY-SA 4.0