Northwest Territory Sedge
Carex utriculata
Last reviewed: August 2026
Northwest Territory Sedge (Carex utriculata) is a perennial grass native to AZ, CA, CO, CT and 25 more states. It blooms in May, June, and July.
Toxicity unknown
Northwest Territory Sedge (Carex utriculata) 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 Northwest Territory Sedge as toxic to livestock.
Light
part sun
Water
high
Size
12"–48" H × 6"–24" W
Bloom
May, Jun, Jul
Native to
AZ, CA, CO, CT and 25 more states
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 445 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Northwest territory sedge is a tall, clumping wetland grass that forms dense colonies in consistently moist to wet soils. This deciduous sedge produces narrow green leaves and inconspicuous flower spikes in late spring through summer. It naturally occurs in marshes, wet meadows, and along water edges throughout much of North America.
Growing Northwest Territory Sedge
Grow Northwest Territory Sedge in part sun and high water. Mature plants reach 12 to 48 inches tall and spread 6 to 24 inches wide. Expect high maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Northwest Territory Sedge 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 concerns
- Can spread aggressively and look unkempt
- Dies back completely in winter leaving bare patches
Wildlife value
This sedge provides nesting material and cover for waterfowl and marsh birds. The seeds feed various songbirds and waterfowl, while the dense growth offers shelter for small wildlife in wetland areas.
Common questions
- How much sun does Northwest Territory Sedge need?
- Northwest Territory Sedge grows best in part sun conditions.
- When does Northwest Territory Sedge bloom?
- Northwest Territory Sedge blooms in May, June, and July.
- Where is Northwest Territory Sedge native?
- Northwest Territory Sedge (Carex utriculata) is native to AZ, CA, CO, CT and 25 more states, per vouchered herbarium specimen records and regional native plant society lists.
- Is Northwest Territory Sedge toxic to livestock?
- The USDA PLANTS Database does not flag Northwest Territory Sedge as toxic to livestock.
- Is Northwest Territory Sedge HOA-friendly?
- Northwest Territory Sedge 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 vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Northwest Territory 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