Prostanthera scutellarioides

Distribution Map
Family: Lamiaceae
Distribution: Western Sydney and in scattered locations in eastern New South Wales and south-east Queensland.
Common Name: No generally accepted common name
Derivation of Name: Prostanthera...from Greek prostheke; an appendix and anthera; an anther, referring to the appendage on the stamens
scutellarioides...similar to the genus Scutellaria
Conservation Status: Not considered to be at risk in the wild.

General Description:

Prostanthera is a genus of about 90 species which occur only in Australia. They are known generally as "mint bushes" because of the aromatic foliage of many species. As a member of the Lamiaceae, Prostanthera is related to a number of culinary herbs such as mint, thyme, oregano and sage.

Prostanthera scutellarioides
Prostanthera scutellarioides
Photo: Brian Walters

Prostanthera scutellarioides is typically a small, wiry shrub rarely exceeding half a metre in height. Leaves are linear up to 15mm long and are highly aromatic. The flowers are usually purple or mauve but pale pink forms are also known. Flowering occurs mainly in spring but there may also be flushes at other times of the year.

This species was once common in western Sydney but much of its habitat has been lost to the suburban sprawl. It is not well known in cultivation and seems difficult to maintain for long periods even in areas where it grows naturally. Like most prostantheras it prefers a well drained position with some shelter from direct summer sun. It is a beautiful, small shrub - well worth persisting with.

Prostantheras respond to well to annual fertilising after flowering and are not as sensitive as some other Australian plants to phosphorus.

Propagation is easy from cuttings but seed can be slow to germinate. In areas where the root-rot fungus Phytophthora cinnamomi is a problem, grafting onto the related Westringia fruticosa is recommended.


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