Round-leaved Mint Bush

A genus of about 50 species of evergreen shrubs and small trees from a variety of habitats in Australia. Most hae a strong mint-like aroma. Several species are grown as ornamentals for their neat, fragrant foliage and profuse flowering, both outdoors in warm climates, and under glass in colder regions. Mint bushes are rich in volatile oils, including menthol and cineole (as found in Mentha species, See, Peppermint), which have bactericidal and fungicidal properties. Several species, including P. cineolifera, were used by Australian Aboriginals in infusions to releive headaches and colds. Prostanthera is from the Greek prosthema, "addition", and anthos, "growth", as the anthers have spur-liek appendages.

Large, bushy shrub with rounded to obovate leaves, 1.2cm (½in) long. Lilac to mauve, occasionally pink, broadly bell-shaped flowers, 1cm (½in) across, are produced in racemes, to 7cm (3in) long, in spring.

Common Name:	Round-leaved Mint Bush
Botanical Name:	Prostanthera rotundifolia
Genus:	Prostanthera
Family:	Lamiaceae
Cultivation:	Well-drained soil in sun. Prone to spider mites and whiteflies when grown under glass.
Propagation:	By seed sown in spring at 13-18°C (55-64°F); by semi-ripe cutting in summer. Prune lightly immediately after flowerings. Prostantheras dislike hard pruning.
Harvest:	Leaves are picked as required for infusions, and dried for potpourris.
Native Location:	S and SE Australia
Height:	2-4m (6-12ft)
Width:	1-3m (3-10ft)
Hardiness:	Z9
Parts Used:	Leaves
Properties:	An aromatic, decongestant herb with a strong, peppery, mint-like flavor. It has anti-bacterial and antifungal effects.
Medicinal Uses:	Externally for colds and headaches.
Culinary Uses:	Fresh or dried leaves are used to flavor meat dishes and sauces, also to make tea.
Economic Uses:	Leaves are added to potpourris.
Bibliography:	Encyclopedia of Herbs by Deni Brown. Copyright © 1995, 2001 Dorling Kindersley Limited. pp 330-331