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Lamiaceae FAMILY

Mentha diemenica

Mentha diemenica

Edibility
2/5
Medicinal
2/5

Safety & Hazards

Although no records of toxicity have been seen for this species, large quantities of some members of this genus, especially when taken in the form of the extracted essential oil, can cause abortions so some caution is advised.

Cultivation Details

HabitPerennial
Growth—

Mentha diemenica is not a very hardy plant. It can tolerate short periods with temperatures down to at least -7°c[1]. The following notes are based on the general needs of the genus. Mentha species generally succeed in most soils and situations so long as the soil is not too dry[2, 3, 4]. A sunny position is best for production of essential oils, but mint species will usually also succeed in partial shade. The plants can tolerate occasional trampling[1]. Mentha species are very prone to hybridisation and so the seed cannot be relied on to breed true. Even without hybridisation, seedlings will often not be uniform and so the content of medicinal oils etc will vary. When growing plants with a particular aroma it is best to propagate them by division[PFAF]. Most mints have fairly aggressive spreading roots and, unless you have the space to let them roam, they need to be restrained by some means such as planting them in containers that are buried in the soil[PFAF]. Hybridizes freely with other members of this genus. The whole plant has a mint-like aroma. Members of this genus are rarely if ever troubled by browsing deer[5].

Propagation

Seed - sow spring in a cold frame. Germination is usually fairly quick. Prick out the seedlings into individual pots when they are large enough to handle and plant them out in the summer. Mentha species are very prone to hybridisation and so the seed cannot be relied on to breed true. Even without hybridisation, seedlings will not be uniform and so the content of medicinal oils etc will vary. When growing plants with a particular aroma it is best to propagate them by division[PFAF]. Division can be easily carried out at almost any time of the year, though it is probably best done in the spring or autumn to allow the plant to establish more quickly. Virtually any part of the root is capable of growing into a new plant. Larger divisions can be planted out direct into their permanent positions. However, for maximum increase it is possible to divide the roots up into sections no more than 3cm long and pot these up in light shade in a cold frame. They will quickly become established and can be planted out in the summer. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Mentha+diemenica>

Pollinators

Bees, Lepidoptera, Insects

References

  1. [1]Australian Native Plants. — Wrigley. J. W. and Fagg. M. · Collins. (Australia) · 1988 · ISBN 0-7322-0021-0 ↩︎A lovely book, written in order to encourage Australian gardeners to grow their native plants. A little bit of information for the plant project.
  2. [2]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  3. [3]New Vegetable Growers Handbook. — Simons. · Penguin · 1977 · ISBN 0-14-046-050-0 ↩︎A good guide to growing vegetables in temperate areas, not entirely organic.
  4. [4]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  5. [5]Perennial Garden Plants — Thomas. G. S. · J. M. Dent & Sons, London. · 1990 · ISBN 0 460 86048 8 ↩︎A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
  6. [6]Flora of New South Wales — http://plantnet.rbgsyd.nsw.gov.au/floraonline.htm ↩︎An on-line resource giving a brief botanical description of all the native plants of New South Wales, their habitat and range, together with diagrams and photographs of the plants.
  7. [7]Australian Medicinal Plants. — Lassak. E. V. and McCarthy. T. · New Holland Publishers · 2001 · ISBN 1876334703 ↩︎A very good and readable guide to the subject.
  8. [8]Flora of the Sydney Region — Carolin. R. & Tindale. M. · Reed. Australia. · 1993 · ISBN 0730104001 ↩︎Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.
  9. [9]A Field Guide to Medicinal Plants. Eastern and Central N. America. — Foster. S. & Duke. J. A. · Houghton Mifflin Co. · 1990 · ISBN 0395467225 ↩︎A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
  10. [10]Encyclopaedia of Herbs and their Uses. — Bown. D. · Dorling Kindersley, London. · 1995 · ISBN 0-7513-020-31 ↩︎A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
  11. [11]Herbs — Phillips. R. & Foy. N. · Pan Books Ltd. London. · 1990 · ISBN 0-330-30725-8 ↩︎Deals with all types of herbs including medicinal, culinary, scented and dye plants. Excellent photographs with quite good information on each plant.
  12. [PFAF]Plants for a Future — pfaf.org ↩︎