Encyclopedia - Plants for ponds
Lingonberry-leaved knotweed
Polygonum vaccinifolium meissn
Family Polygonaceae. Native to the Himalayas.
A creeping herbaceous perennial up to 15 cm tall. Forms large groups. Flowers in late summer to early autumn with small pink flowers in dense inflorescences about 6 cm long. Requires protection from moisture in winter. Hardy to -23 °C. In cultivation since the 19th century.