Slender club-rush (Isolepis cernua) is a pond plant that requires little maintenance. Prune dead blades in the autumn and remove them from the pond. If the clump grows too large, you can remove the club-rush (Isolepis cernua) from the pond in May. Split the clump into smaller pieces and replant only a few of these.

Slender club-rush (Isolepis cernua) in the winter

The roots of slender club-rush (Isolepis cernua) are not frost hardy. However, to avoid any problems, simply ensure that the roots are deeper than the frost level. You can also put the basket with the club-rush (Isolepis cernua) into a container with water and keep this in a frost-free area.

Club-rush can also freeze inside a pot. If this happens, you can protect the root ball from serious frost by bringing the pot inside and storing it in a cool but frost-free area.