Rush, forming dense clumps of blue/green foliage. Very vigorous, and grows in damp ground and standing water. Can handle heat, drought as well. Spreads by creeping rhizomes. Evergreen, hardy
Widely distributed throughout New Zealand, found in coastal to lowland areas. Often in pastures where it can be seen as a major weed. Usually in damp swampy hollows, on the margins of wetlands and lakes, in open shrubland on damp ground, or near salt marshes.