Erect perennial rush <1m high; forms stout, dense, prickly clump. Leaves & stems sharply pointed. Many large brown flowers on each stem. Long-tailed seeds in dark brown capsules.
Coastal flats of mud or sand.
Seeds spread by water. Spreads locally from rhizomes.
Displaces native rushes & sedges. Recreational quality of habitat greatly reduced.
Thick rhizomes & roots make physical control difficult. Herbicide treatments best after heavy rain has washed salt from plant.
1. Dig out all roots & rhizomes.
2. Weed wipe spring-summer (300ml glyphosate+2ml penetrant/1L).
3. Knapsack spray spring-summer (100ml
glyphosate + 20ml penetrant/10L).
Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.