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Clustered Field Sedge

Carex praegracilis

Last reviewed: October 2026

Carex praegracilis is a spreading, grass-like sedge that blooms from May through August in full sun with consistently moist soil. It suits wet meadows, rain gardens, and lawn alternatives across a wide range of climates.

Clustered Field Sedge (Carex praegracilis)
Photo: (c) Steve Matson, some rights reserved (CC BY), uploaded by Steve Matson

Toxicity unknown

Clustered Field Sedge (Carex praegracilis) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Clustered Field Sedge as toxic to livestock.

Light

full sun

Water

high

Size

12"–36" H × 6"–18" W

Bloom

May, Jun, Jul, Aug

Native to

AZ, CA, CO, IA and 21 more states

Pollinators

beetles, flies

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Browse plants for this ecoregion

Northwestern Forested MountainsSierra NevadaCentral California Foothills and Coastal MountainsCentral California ValleySouthern California MountainsNorth American DesertsCentral Basin and RangeMojave Basin and RangeSouthern RockiesArizona/New Mexico MountainsHigh PlainsSouthwestern TablelandsCentral Great PlainsNorthwestern Glaciated PlainsNorthwestern Great PlainsGreat PlainsNorthern Glaciated PlainsWestern Corn Belt PlainsNorthern Lakes and ForestsNorth Central Hardwood ForestsSoutheastern Wisconsin Till PlainsCentral Corn Belt PlainsEastern Corn Belt PlainsSouthern Michigan/Northern Indiana Drift PlainsHuron/Erie Lake PlainsErie Drift PlainMadrean ArchipelagoSonoran Basin and RangeEastern Great Lakes LowlandsSouthern California/Northern Baja Coast

Carex praegracilis is a native sedge that forms dense, carpet-like colonies through underground rhizomes. This hardy grass-like perennial produces narrow green leaves and inconspicuous flower spikes during summer months. It thrives in moist conditions and full sun, making it excellent for areas with consistent irrigation.

Growing Clustered Field Sedge

Grow Clustered Field Sedge in full sun and high water. Mature plants reach 12 to 36 inches tall and spread 6 to 18 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.

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In an HOA neighborhood

Clustered Field 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.

  • Aggressive spreading habit can appear unkempt
  • High water requirements may seem excessive
  • Grass-like appearance may be mistaken for unmowed lawn

Wildlife value

This sedge provides habitat and food for beetles and flies during its extended blooming period from May through August. The dense growth also offers nesting material and cover for small wildlife.

Common questions

When does Carex praegracilis bloom?
Carex praegracilis blooms from May through August, forming small spikelets rather than showy flowers.
What pollinators visit Carex praegracilis?
Beetles and flies are the recorded visitors to Carex praegracilis, though like most sedges it depends mainly on wind for pollen movement.
How much water does Carex praegracilis need?
This sedge grows best with regular to high moisture and handles occasional standing water, which makes it useful in wet meadows and rain gardens.
Does Carex praegracilis need full sun?
It forms its densest, most upright growth in full sun but can tolerate part shade, especially in hotter regions.
Is Clustered Field Sedge toxic to livestock?
The USDA PLANTS Database does not flag Clustered Field Sedge as toxic to livestock.
Is Clustered Field Sedge HOA-friendly?
Clustered Field Sedge takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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