Willow Grass, Amphibious Bistort Persicaria amphibia

Willow Grass, Amphibious Bistort
Persicaria amphibia

This amphibious (living or able to live both on land and in water) perennial has long-stalked floating leaves 8-10cm long and 2-4cm wide. They are carried on stems that are 30cm-90cm (1-3ft) long and which root from the stems. The pink flowers are densly packed in spikes that grow above the water in midsummer. It is an attractive plant that is useful for the shallow margins of informal ponds.

Spread indefinite
Water depth to 45cm
Hardy
Full sun
Propogation seed or division in spring