grassN. America Native

Yellowfruit Sedge

Carex annectens

The Story

Plant Bio

Carex annectens is a clump-forming perennial sedge native to moist meadows and prairie lowlands across eastern and central North America. It forms dense tussocks of narrow, glaucous green leaves up to three feet high, flowering in late spring with dense greenish-yellow seed spikes.

The species is distinguished by its golden-yellow mature seed capsules and transversely wrinkled leaf sheaths. Its fibrous root system anchors wet soils effectively while providing seed for native birds and cover for ground fauna.

Uses & Benefits:

Forms neat, arching tussocks of fine green foliage topped with yellowish seed spikes.

Dense root systems bind wet soils and absorb stormwater in rain gardens.

Serves as a larval host plant for native caterpillars and yields seeds eaten by songbirds.

Essentials

At a Glance

Plant Type

Grass

Height

36"

Width

24"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Medium to wet

Humidity

High

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Select a site in full sun or partial shade with moist to wet soil or periodic standing water.
Space plants 18 to 24 inches apart to accommodate mature tussock width.
Water thoroughly at planting and keep soil damp until root systems establish.
Apply a light layer of organic leaf mold around clumps to retain soil moisture.

Pro Tip

Cut foliage back to two inches above the crown in late winter; cutting hard into the dense, old crown base can destroy emerging shoot buds.

Keep It Thriving

Care Guide

Do

Keep soil consistently moist, particularly during hot summer months.
Cut back ragged foliage in late winter before new green growth shoots up.
Divide overgrown clumps in spring to propagate new plants.

Don't

Do not trim down into old woody crown tissue, which damages growing points.
Do not over-fertilize, as excess nitrogen causes soft, floppy stems.
Do not allow soil to dry out completely during extended dry spells.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Mulch
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rain gardens and drainage swalesPond margins and wetland edge plantingsPrairie and native meadow restorationErosion control on damp slopes

Companion Plants

Iris versicolor Asclepias incarnata Lobelia siphilitica Eutrochium maculatum

Multiply

Propagation Methods

Good to Know

Common Questions

Yellowfruit Sedge questions

What zones can Yellowfruit Sedge grow in?

Yellowfruit Sedge is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Yellowfruit Sedge deer resistant?

Yes — Yellowfruit Sedge is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Yellowfruit Sedge bloom?

Yellowfruit Sedge typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Yellowfruit Sedge need full sun?

Yellowfruit Sedge does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.