Bolboschoenus fluviatus is a perennial forming clump 1.5 -2m tall when in flower, dying down in the Winter. It has creeping rhizomes.
It is found on margins of rivers and estuaries and in drains and swamps ,mainly coastal.

• Used for wetland revegetation projects
• Hardy

Associated plants found with Bolboschoenus fluviatus in Auckland are Taupo orientalis raupo, and Apodasmia similis oi oi