Alisma plantago-aquatica is a perennial found in areas such as Northern temperate regions of Europe, including Britain, Asia and America. A member of the Alismataceae family, Alisma plantago-aquatica L is also known by its common name of Great Water Plantain. The perennial can grow to a height of 0.9 meters and up to 0.45 meters wide. The preferred habitat of Ditches, damp ground and shallow pond margins in water up to 15 centimeters deep[13, 17, 24]., with LMH soil and N moisture levels. .

Great Water Plantain is a zone 6 hardy plant that has medicinal uses - the medicinal usage rating of Great Water Plantain is 3The leaves are antibacterial, anticholesterolemic, diaphoretic, diuretic, hypoglycaemic and hypotensive[4, 147, 176]. They are used in the treatment of cystitis, dysentery, renal calculus, gravel etc[4]. The fresh leaf is rubefacient[222]. It is used in the treatment of leprosy[218] and is also applied locally to bruises and swellings[4]. Dried stem bases eaten, or grated and taken with water in treating digestive disorders such as heartburn, cramps and stomach flu[257]. The powdered seed is an astringent, used in cases of bleeding[4]. The seed is also said to promote sterility[218]. The root has a wide range of medicinal uses[176, 218]. It is antibacterial, anticholesterolemic, diuretic and hypotensive[176]. It is said to lower blood pressure, cholesterol and blood sugar levels[238] whilst it also has an antibacterial action on Staphylococcus, Pneumococci and Mycobacterium[176]. The root is used in the treatment of oliguria, oedema, nephritis, acute diarrhoea, cholesterolaemia and fatty
liver[176]. It has been thought of as a cure for rabies, though this has not been substantiated[4]. The whole plant is believed to promote conception[218]. The root is harvested before . The plant comes into flower and is dried for later use[238]. A homeopathic remedy is obtained from the fresh root[4].

Alisma plantago-aquatica is 0 plant, whose flowers bloom typically in 6 - 8, and which is pollinated by Flies.

Known hazards of the plant: The fresh leaves and roots are toxic but the toxic principal is destroyed by heat or by drying[13, 46].

The plant has an edibility rating of 2Root - cooked[13, 46, 61, 74]. Rich in starch[114]. Caution is advised, the root is acrid if it is not dried or well cooked before use[2, 183]. Leaves and petioles - must be thoroughly cooked. They require long boiling and have a salty flavour[105, 179].

Cultivation tips: Succeeds in a sunny position in boggy ground or shallow water up to 25 centimeters deep[200]. Plants often self-sow aggressively when in a suitable position[1, 56]. The subspecies A. plantago-maritima orientale. Sam. is the form used medicinally in China[176]. The subspecies A. plantago-maritima parviflorum (Syn A. parviflorum, A. subcordatum) is the form used medicinally in America[222]. Plants are very attractive to slugs[K].

. The plant should best be propagated by Seed - best sown in a cold frame as soon as it is ripe. Place the pot in about 3 centimeters of water to keep the soil wet. Pot up the seedlings when large enough to handle and keep in the cold frame for the first winter, planting out in late spring. Division in spring or autumn. Fairly easy, the divisions can be planted straight out into their permanent positions.

Root - cooked[13, 46, 61, 74]. Rich in starch[114]. Caution is advised, the root is acrid if it is not dried or well cooked before use[2, 183]. Leaves and petioles - must be thoroughly cooked. They require long boiling and have a salty flavour[105, 179].