Spike rushes can grow in shallow water or moist soils and grow from rhizomes. Stems are unbranched with sheaths around the base but can be round, square, or flattened depending on the species. All spike rushes have small fruiting spikes at the tips of the stem.
Spike Rush can be cut down or the roots can be dug up. But it is difficult to control them this way because they will regrow from the left over seeds.
A systemic herbicide like Shore Klear will kill the root system of the plant.
Chemical Applicators Tips
Anytime you use chemically treat your pond you should also keep in mind