creeping spike rush
Eleocharis palustris
Cyperaceae · grass grasslike · introduced
Last updated
Data Coverage 1 of 6 dimensions
As of March 31, 2026, soil temperature at Kent / Auburn is 47.7°F. creeping spike rush, hardy to Zone Zones 3–8, is in early-season conditions in Zone 8b.
Creeping spike rush (Eleocharis palustris, Cyperaceae) is a grass-like perennial of wetland habitats, reaching 2 to 4 feet tall and 1 to 2 feet wide. Greenish-brown flower spikes appear from June through September on slender, erect, leafless stems that spread by rhizomes.
Creeping spike rush grows in sun to part shade in wet soils and shallow water, hardy in Zones 3 to 8. It tolerates erosion and saturated conditions. No significant pest or disease issues are documented. No cultivars are in the trade.
Quick Facts
Height
2-4 ft
Spread
1-2 ft
Light
Sun to Part Shade
Water
High
Hardiness
Zone Zones 3–8
Bloom Time
june to september
Origin
Temperate northern hemisphere