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Coastal Sedge

Carex exilis

Last reviewed: September 2026

Coastal Sedge (Carex exilis)
Photo: (c) er-birds, some rights reserved (CC BY)

Toxicity unknown

Coastal Sedge (Carex exilis) 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.

Light

part sun

Water

high

Size

8"–24" H × 4"–12" W

Bloom

May, Jun, Jul

Native to

AL, DE, MA, MD and 11 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 452 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Coastal sedge is a fine-textured native grass that forms small, delicate clumps in wet areas. This slender sedge produces inconspicuous flowers from May through July and thrives in consistently moist to wet soils with partial sun exposure.

In an HOA neighborhood

Coastal 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 are impractical in most residential settings
  • Very small size makes it appear sparse or incomplete in formal landscapes
  • Goes completely dormant in winter leaving bare spots

Wildlife value

While not a major pollinator plant, this sedge provides nesting material and seeds for birds. The dense root system helps stabilize soil and provides habitat for beneficial insects in wetland edges.

Common questions

How much sun does Coastal Sedge need?
Coastal Sedge grows best in part sun conditions.
When does Coastal Sedge bloom?
Coastal Sedge blooms in May, June, and July.
Where is Coastal Sedge native?
Coastal Sedge (Carex exilis) is native to AL, DE, MA, MD and 11 more states, per vouchered herbarium specimen records and regional native plant society lists.
Is Coastal Sedge HOA-friendly?
Coastal 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.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Coastal Sedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Planning a bed around it? Start a free plan with this plant

Not sure where to start? Take the 2-minute yard quiz