Corsican Mint, Mint
Mentha requienii
Family: Lamiaceae or Labiatae
What it is like
Mentha requienii is a PERENNIAL growing to 0.1 m (0ft 4in) by 0.5 m (1ft 8in). See above for USDA hardiness. It is hardy to UK zone 6 and is not frost tender. It is in flower from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. It is noted for attracting wildlife. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and can grow in heavy clay soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
Height (m): 0.1
Where it is found
Not known
Europe - Mediterranean in Corsica, Sardinia and Italy. Occasionally naturalized in Britain.
Conservation Status:
Countries/locations it is found in
How it is used
Food
Rating: 3
Leaves - raw or cooked. A very strong peppermint-like aroma, it is used as a flavouring in salads, cooked foods and liqueurs. A herb tea is made from the leaves.
Condiment: the various plants that are used as flavourings, either as herbs, spices or condiments.
Tea: the various herb teas that can be used in place of tea, plus the genuine article.
Medicine
Rating: 2
A tea made from the leaves of most mint species has traditionally been used in the treatment of fevers, headaches, digestive disorders and various minor ailments. The leaves are harvested as the plant comes into flower and can be dried for later use. The essential oil in the leaves is antiseptic, though it is toxic in large doses.
Antiseptic: Preventing sepsis, decay or putrefaction, it destroys or arrests the growth of micro-organisms.
Carminative: Reduces flatulence and expels gas from the intestines.
Febrifuge: Reduces fevers.
Other
Rating: 3
An essential oil with a strong peppermint scent is obtained from the whole plant. Rats and mice intensely dislike the smell of mint. The plant was therefore used in homes as a strewing herb and has also been spread in granaries to keep the rodents off the grain. An ornamental ground cover plant.
Essential: Essential oils that are used in perfumery, medicines, paint solvents, insect repellents etc.
Repellent: Plants that are said to deter but not necessarily kill various mammals, birds, insects etc.
Strewing: Plants, usually aromatic, that are strewn on the floor to give a nice smell, repel insects etc.
Attracts Wildlife: Plants noted for attracting wildlife
Food Forest: Plants for Edible Forest Gardens and Food Forests.
Ground cover: Ground Cover
Scented Plants: Plants noted for their scent
How it is grown
Reaching only 1-3 cm in height. Succeeds in most soils and situations so long as the soil is not too dry. This species of mint will grow in drier soils than the other mints. It also grows well in heavy clay soils. A sunny position is best for production of essential oils, but it also succeeds in partial shade. Prefers a shady position. Fairly tolerant of being walked on, it grows well in the cracks of paving stones and also as a lawn with thyme and camomile. This species is not hardy in all areas of Britain. However, the plant usually self-sows even when the parent plant is killed by frost. The whole plant is strongly aromatic with a peppermint aroma. The flowers are very attractive to bees and butterflies. A good companion plant for growing near cabbages and tomatoes, helping to keep them free of insect pests. Members of this genus are rarely if ever troubled by browsing deer. The plant is heat tolerant in zones 9 through 6. (Plant Hardiness Zones show how well plants withstand cold winter temperatures. Plant Heat Zones show when plants would start suffering from the heat. The Plant Heat Zone map is based on the number of "heat days" experienced in a given area where the temperature climbs to over 86 degrees F (30°C). At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 (no heat days) to 12 (210 or more heat days). For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. A clumping mat former. Forming a dense prostrate carpet with a limited spread. The root pattern is rhizomatous with underground stems sending roots and shoots along their length. The root pattern is stoloniferous rooting from creeping stems above the ground.
Propagating it: 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. 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.
Best place to grow: Ground Cover; Cultivated Beds;
Habit: Perennial
Hardiness: 5-9
Growth:
Soil: Light (sandy), medium, heavy (clay)
Shade: Semi-shade, no shade
Moisture: Moist
Things to keep in mind
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.