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Tall Mannagrass

Glyceria elata

Last reviewed: June 2026

Tall Mannagrass (Glyceria elata)
Photo: no rights reserved, uploaded by Tom Erler

Light

part sun

Water

high

Size

24"–60" H × 12"–24" W

Bloom

Jun, Jul, Aug

Native to

AZ, CA, CO, GA and 8 more states

Glyceria elata is a tall native wetland grass that forms upright clumps with graceful seed heads in summer. This moisture-loving perennial thrives in wet soils and partial sun conditions. It provides natural movement and texture to water features or consistently moist garden areas.

In an HOA neighborhood

Tall Mannagrass 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.

  • Very tall height appears weedy in formal settings
  • Requires consistently wet soil which creates maintenance challenges
  • Informal wetland appearance conflicts with typical landscaping expectations

Wildlife value

The seeds provide food for waterfowl and songbirds, while the dense clumps offer nesting habitat for marsh birds. The grass structure supports beneficial insects and creates cover for small wildlife.

Common questions

How much sun does Tall Mannagrass need?
Tall Mannagrass grows best in part sun conditions.
When does Tall Mannagrass bloom?
Tall Mannagrass blooms in June, July, and August.
Where is Tall Mannagrass native?
Tall Mannagrass (Glyceria elata) is native to AZ, CA, CO, GA and 8 more states, per the USDA PLANTS Database and regional native plant society lists.
Is Tall Mannagrass HOA-friendly?
Tall Mannagrass 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 USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Tall Mannagrass? 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