Great Water Dock Rumex hydropathalum Seeds. Foodplant of the Large Copper Butterfly
Seldom available. Sow in autumn or from February. Seed germinates and grows well in Spring, producing plants with broad leaves and often growing to over a metre in height.
In the wild Great Water Dock lives at the water's edge, with its roots continually immersed. If growing in pots, keep them in a tray with no holes, and always filled with water.