Globe Flatsedge
Cyperus echinatus
Last reviewed: June 2026
Light
full sun
Water
medium
Size
6"–24" H × 4"–12" W
Bloom
Jul, Aug, Sep
Native to
AL, AR, DE, FL and 23 more states
Browse plants for this ecoregion
Cyperus echinatus is a small annual sedge with grass-like foliage and distinctive spiky seed heads that appear in summer. This compact plant grows in clumps and produces umbrella-like clusters of brown flowers that mature into ornamental seed heads.
In an HOA neighborhood
Globe Flatsedge takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Grass-like appearance may be mistaken for weeds
- Annual nature means gaps will appear when plants die
- Spiky seed heads can look unkempt to traditional gardeners
Wildlife value
The seed heads provide food for small birds and the plant may attract some beneficial insects during its flowering period.
Common questions
- How much sun does Globe Flatsedge need?
- Globe Flatsedge grows best in full sun conditions.
- When does Globe Flatsedge bloom?
- Globe Flatsedge blooms in July, August, and September.
- Where is Globe Flatsedge native?
- Globe Flatsedge (Cyperus echinatus) is native to AL, AR, DE, FL and 23 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Globe Flatsedge HOA-friendly?
- Globe Flatsedge takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
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 Globe Flatsedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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