eau de Cologne mint

Grow in a poor, moist soil in full sun. Restrict its spread by planting in deep containers and plunging them into the soil, or by growing in small contained beds

Cut back old stems at the end of the year to ground level

Propagate by seed, sowing in containers in a cold frame in spring. Divide plants in spring or autumn. Softwood cuttings may be taken in the spring. Pieces of rhizome can be potted up at any time of the growing season and grown on until established after which they can be planted out

Generally trouble free

Powdery mildews and rust diseases can be troublesome