Height: 45-60cm (1 1/2-2ft)
Water depth: 5-10cm (2-4in)
Site: full sun
Water plantain (Alisma plantago-aquatica) is a useful marginal aquatic, its spikes of small, pale pink or cream-white, thrce-petalledadding a delicate touch. The flowers open in summer. They stand 45-60cm above attractive lance-shaped to oval, deeply ribbed , which form a rosette at the base of the plant.
A dwarf species, A. ranunculoides is also available. This creeping plant has bright green, lance-like leaves sprinkled with crowded umbels of blush flowers.
Plant water plantain in early to mid spring at a water depth of 5-10cm (2-4in) in loamy soil and full sun. Alternatively, plant in a crate or basket and lower this into the water.
Deadhead after flowering or the plants become straggly.
Propagation: Divide overcrowded clumps in spring and replant. It self-fully.
Pests and diseases: Trouble free.