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Eastern Narrowleaf Sedge

Carex amphibola

Last reviewed: August 2026

Carex amphibola is a clump forming sedge grass that thrives in part shade with medium soil moisture, blooming from April through June across the eastern and central United States.

Eastern Narrowleaf Sedge (Carex amphibola)
Photo: (c) Zihao Wang, some rights reserved (CC BY), uploaded by Zihao Wang

Toxicity unknown

Eastern Narrowleaf Sedge (Carex amphibola) 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 Eastern Narrowleaf Sedge as toxic to livestock.

Light

part shade

Water

medium

Size

12"–24" H × 8"–16" W

Bloom

Apr, May, Jun

Native to

AL, AR, CT, DE and 22 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.

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Carex amphibola is a native sedge that forms neat, compact clumps of arching green foliage. This adaptable grass-like perennial thrives in partial shade and produces small, inconspicuous flowers in spring and early summer.

Growing Eastern Narrowleaf Sedge

Grow Eastern Narrowleaf Sedge in part shade and medium water. Mature plants reach 12 to 24 inches tall and spread 8 to 16 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Eastern Narrowleaf Sedge is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

Wildlife value

This sedge provides nesting material and seeds for birds, while its dense clumps offer shelter for small wildlife. The flowers attract small native bees and other tiny beneficial insects.

Common questions

How much light does Carex amphibola need?
This sedge does best in part shade, though it can tolerate dappled sun to fuller shade beneath trees or along woodland edges.
When does Carex amphibola bloom?
It produces its inconspicuous flower spikes from April through June.
What soil moisture does Carex amphibola prefer?
It grows best in medium moisture soil but can handle brief dry spells once established, especially in shadier spots.
Is Carex amphibola evergreen?
Its foliage is semi-evergreen, often staying green through mild winters and dying back in colder climates.
Is Eastern Narrowleaf Sedge toxic to livestock?
The USDA PLANTS Database does not flag Eastern Narrowleaf Sedge as toxic to livestock.
Is Eastern Narrowleaf Sedge HOA-friendly?
Eastern Narrowleaf Sedge is generally an HOA-friendly choice in the right placement, with low maintenance.

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

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 Eastern Narrowleaf Sedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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