How much sun does Yellow Spikerush need?

Yellow Spikerush grows best in full sun conditions.

When does Yellow Spikerush bloom?

Yellow Spikerush blooms in June, July, and August.

Where is Yellow Spikerush native?

Yellow Spikerush (Eleocharis flavescens) is native to AL, AR, AZ, CA and 30 more states, per the World Checklist of Vascular Plants (Kew).

Is Yellow Spikerush HOA-friendly?

Yellow Spikerush takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Yellow Spikerush

Name: Pollinator Patch
Author: Pollinator Patch

Eleocharis flavescens

Last reviewed: August 2026

Toxicity unknown

Yellow Spikerush (Eleocharis flavescens) 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

full sun

Water

high

Size

8"–24" H × 2"–6" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, AZ, CA and 30 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 area

Browse plants for this ecoregion

East Central Texas Plains Western Gulf Coastal Plain South Central Plains Piedmont Northeastern Highlands Northeastern Coastal Zone Northern Allegheny Plateau Northern Forests Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Ridge and Valley Mississippi Alluvial Plain Southern Coastal Plain Southern Florida Coastal Plain Acadian Plains and Hills Eastern Great Lakes Lowlands Atlantic Coastal Pine Barrens

Yellow spikerush is a slender, grass-like wetland perennial that forms narrow clumps of bright green stems. It produces small, yellowish flower spikes in summer and thrives in consistently moist to wet conditions. This plant is best suited for rain gardens, pond edges, or other water features where regular irrigation can maintain high moisture levels.

In an HOA neighborhood

Yellow Spikerush takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Requires wet conditions unsuitable for typical lawns
Grass-like appearance may look unintentional
Limited to specialized wetland applications

Wildlife value

This plant provides habitat and nesting material for wetland birds and supports various small insects. The seeds are eaten by waterfowl and songbirds that frequent wet areas.

Common questions

How much sun does Yellow Spikerush need?: Yellow Spikerush grows best in full sun conditions.
When does Yellow Spikerush bloom?: Yellow Spikerush blooms in June, July, and August.
Where is Yellow Spikerush native?: Yellow Spikerush (Eleocharis flavescens) is native to AL, AR, AZ, CA and 30 more states, per the World Checklist of Vascular Plants (Kew).
Is Yellow Spikerush HOA-friendly?: Yellow Spikerush 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 the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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

Add this plant to your garden

iPhone app Android app

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