Flat-stem Spike-rush
Eleocharis compressa
Last reviewed: June 2026
Light
full sun
Water
high
Size
4"–16" H × 2"–6" W
Bloom
May, Jun, Jul, Aug
Native to
AL, AR, CO, IA and 25 more states
Browse plants for this ecoregion
Flat-stem spike-rush is a low-growing native sedge that forms small clumps with distinctive flattened stems. This moisture-loving perennial produces small, inconspicuous flower spikes from late spring through summer and thrives in consistently wet conditions.
In an HOA neighborhood
Flat-stem Spike-rush takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Requires consistently wet conditions that may create drainage issues
- Very informal grass-like appearance may look weedy
- Small size and unremarkable appearance don't provide ornamental impact
Wildlife value
This sedge provides nesting material and cover for small birds and supports various insects, though it is not a significant pollinator plant.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Flat-stem Spike-rush fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.