This rather eye-catching plant from a.o. places the European nature gets rather tall with green, keeled, triangular leaves which stay green for a long time during winter as well and may float. Among the leaves in summer and autumn the special, branched, plumy inflorescenses with small male flowers on top of the rounded, un-stalked flowers appear. The female ones produce light-brown fruit-boxes later-on. The plant grows out of a root-stock and may go rampant, so plant the roots in a container with closed sides. For a spot in preferably sun and shallow water and in normal fertile pond-soil. Good winter-hardy.