Spearmint

Siting: Spearmint grows best in full sun, though it tolerates partial shade, and it struggles in dry soils; it prefers organically rich, moist, well-drained ground across clay, loam, or sandy textures with a roughly neutral pH, and plants are usually spaced about 3 feet apart as they reach 1 to 2 feet in height and spread as wide.

Maintenance: The plant needs frequent watering to keep the soil consistently moist, and because it spreads aggressively by rhizomes and by rooting wherever its square stems touch the ground, it is commonly grown in a container or behind a soil barrier to prevent it overrunning a bed. New plants are raised by division, seed, or stem cuttings, which root within one to two weeks in water, and shearing the spent flower spikes after the late-summer bloom encourages fresh vegetative growth.

Fungal diseases are the main problem in spearmint, with rust and leaf spot being the two most commonly reported. The foliage is also susceptible to feeding by whiteflies and aphids.

Culinary: Fresh or dried spearmint leaves and flowers are used to flavor teas, beverages, salads, garnishes, potpourris, jellies, vinegars, syrups, candies, ice creams, lamb dishes, and mint sauce, and the crop carries notable economic value as a flavoring for chewing gum and tea and as a source of essential oil.

Cultural: Beyond the kitchen, spearmint carries distinct cultural roles: in the Middle East mint tea is a customary gesture of hospitality to guests, in Morocco brewing it is treated as a ritual craft, Mexican households have paired it with rue as a folk remedy for menstrual cramps, and Indian cooks use it to make pudina chutney. In traditional medicine the plant has historically been used for colds, coughs, asthma, fever, digestive complaints, and jaundice. Growers have also planted spearmint alongside cabbages and tomatoes as a companion plant said to deter pests, and its foliage has been used as a moth repellent.

Spearmint is native to Europe, with its natural range extending east to China, and it has since been introduced into Canada, the United States, southeastern South America, and northern Africa, where it now grows outside cultivation in moist, disturbed ground.