Dewey Sedge
Carex deweyana
Last reviewed: June 2026
The USDA PLANTS Database (opens in new tab) does not flag Dewey Sedge as toxic to livestock.
Light
part shade
Water
medium
Size
12"–36" H × 6"–18" W
Bloom
May, Jun, Jul
Native to
CO, CT, IA, IL and 17 more states
Dewey sedge is a clumping native grass that forms tidy mounds of narrow green foliage. It produces small, inconspicuous flower spikes in late spring and early summer, preferring partially shaded locations with consistent moisture.
In an HOA neighborhood
Dewey Sedge is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
This sedge provides cover and nesting material for small birds and ground-dwelling wildlife. The seeds offer food for songbirds and small mammals in late summer.
Common questions
- How much sun does Dewey Sedge need?
- Dewey Sedge grows best in part shade conditions.
- When does Dewey Sedge bloom?
- Dewey Sedge blooms in May, June, and July.
- Where is Dewey Sedge native?
- Dewey Sedge (Carex deweyana) is native to CO, CT, IA, IL and 17 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Dewey Sedge toxic to livestock?
- The USDA PLANTS Database does not flag Dewey Sedge as toxic to livestock.
- Is Dewey Sedge HOA-friendly?
- Dewey Sedge is generally an HOA-friendly choice in the right placement, with low maintenance.
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.
Ready to grow Dewey Sedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz