three-square sedge
Schoenoplectus pungens | three-square sedge
A sedge that forms dense stands of dark green, rough-textured foliage. Upright, triangular stems carry blue flowers followed by brown seed heads through the warmer months, giving strong vertical structure in wetland settings. It spreads readily by both seed and creeping rhizomes, allowing it to colonise suitable sites effectively.
Most commonly found in coastal wetlands, it is tolerant of saline conditions and performs well in both fresh and brackish water. Well suited to wetlands, pond margins, streamsides, and restoration planting, it is effective for erosion control and stabilisation while adding robust form and texture to water-based landscapes.
typical habitat.
salt marshes
estauries
drainage.
wet
moist
sun.
full sun
partial shade
mature specifications.
height | 8cm
width | 30cm
pollinators calendar.
flowering | October–January
fruiting | January–June
did you know?
This plant creates valuable habitat for lizards, offering dense ground cover for retreat and clump forming structure that provides camouflage, supports insects, and offers protection from predators. Its layered form adds complexity and low height diversity to the landscape, improving habitat quality at ground level.