Mentha aquatica is a perennial found in areas such as Europe, including Britain, south and east to N. Africa and southwest Asia Also in S. Africa, Madeira. A member of the Labiatae family, Mentha aquatica L is also known by its common name of Water Mint. The perennial can grow to a height of 1 meters and up to 1 meters wide. The preferred habitat of Swamps, fen, marshes, near rivers, streams and ponds, in wet woods[9]., with LMH soil and SN moisture levels. .

Water Mint is a zone 6 hardy plant that has medicinal uses - the medicinal usage rating of Water Mint is 3The leaves are anodyne, antiseptic, antispasmodic, astringent, carminative, cholagogue, diaphoretic, emetic, refrigerant, stimulant, stomachic, tonic and vasodilator[4, 9, 21]. A tea made from the leaves has traditionally been used in the treatment of fevers, headaches, digestive disorders and various minor ailments[222]. It is also used as a mouth-wash and a gargle for treating sore throats, ulcers, bad breath etc[9]. The leaves are harvested as . The plant comes into flower and can be dried for later use[238]. The essential oil in the leaves is antiseptic, though it is toxic in large doses[222].

Mentha aquatica is 1 plant, whose flowers bloom typically in 7 - 10, and which is pollinated by Bees.

Known hazards of the plant: 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.

The plant has an edibility rating of 3Leaves - raw or cooked. A strong distinctive peppermint-like fragrance[183]. Used as a flavouring in salads or cooked foods[5]. The leaves are too pungent for most people to use as a flavouring[244]. A herb tea is made from the leaves[21, 183].

Cultivation tips: Succeeds in most soils and situations so long as the soil is not too dry[1, 16, 200]. Grows well in heavy clay soils. A sunny position is best for production of essential oils, but it also succeeds in partial shade. Plants can grow in water up to 15 centimeters deep[24]. 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[K]. Hybridizes freely with other members of this genus. The whole plant, especially when bruised, has a pungent aroma of bergamot[245]. The flowers are especially attractive to bees and butterflies[24]. A good companion for brassicas[14]. Members of this genus are rarely if ever troubled by browsing deer[233].

. The plant should best be propagated by 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[K]. 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 3 centimeters 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.

Leaves - raw or cooked. A strong distinctive peppermint-like fragrance[183]. Used as a flavouring in salads or cooked foods[5]. The leaves are too pungent for most people to use as a flavouring[244]. A herb tea is made from the leaves[21, 183].