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Tropical Flat Sedge

Cyperus surinamensis

Last reviewed: June 2026

Tropical Flat Sedge (Cyperus surinamensis)
Photo: Judy Gallagher / Wikimedia Commons (CC BY 4.0)

Light

part sun

Water

high

Size

8"–24" H × 4"–12" W

Bloom

Jun, Jul, Aug, Sep

Native to

AL, AR, FL, GA and 8 more states

Tropical flat sedge is a clumping perennial sedge that forms neat, grass-like tufts with narrow green leaves. It produces small, inconspicuous flower clusters during summer and fall months. This moisture-loving plant thrives in partial sun and requires consistent watering to maintain its best appearance.

In an HOA neighborhood

Tropical Flat Sedge 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.

  • May appear weedy or unkempt to those unfamiliar with sedges
  • High water requirements could create maintenance challenges
  • Grass-like appearance might be mistaken for poor lawn care

Wildlife value

While specific pollinator data is limited, this sedge likely provides habitat and cover for small wildlife. As a member of the sedge family, it may offer nesting material for birds and shelter for beneficial insects.

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 Tropical Flat Sedge fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.