How much sun does American Dune Grass need?

American Dune Grass grows best in full sun conditions.

When does American Dune Grass bloom?

American Dune Grass blooms in June, July, and August.

Where is American Dune Grass native?

American Dune Grass (Leymus mollis) is native to CA, IL, MA, ME and 6 more states, per the World Checklist of Vascular Plants (Kew).

Is American Dune Grass toxic to livestock?

The USDA PLANTS Database does not flag American Dune Grass as toxic to livestock.

Is American Dune Grass HOA-friendly?

American Dune Grass is generally an HOA-friendly choice in the right placement, with low maintenance.

American Dune Grass

Name: Pollinator Patch
Author: Pollinator Patch

Leymus mollis

Last reviewed: August 2026

The USDA PLANTS Database (opens in new tab) does not flag American Dune Grass as toxic to livestock.

Light

full sun

Water

low

Size

24"–48" H × 12"–24" W

Bloom

Jun, Jul, Aug

Native to

CA, IL, MA, ME and 6 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 432 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Coast Range Puget Lowland Central California Foothills and Coastal Mountains Acadian Plains and Hills

American dune grass is a native coastal grass that forms upright clumps with blue-green foliage and attractive seed heads in summer. This drought-tolerant perennial thrives in sandy soils and windy conditions, making it excellent for challenging sites. It provides year-round structure and movement in the landscape.

In an HOA neighborhood

American Dune Grass is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.

Works well in: mid zone, street edge.

May spread aggressively in ideal conditions
Can look somewhat wild or unkempt to traditional tastes

Wildlife value

The seed heads provide food for songbirds and small mammals in late summer and fall. As a native grass, it offers nesting material and habitat for beneficial insects.

Common questions

How much sun does American Dune Grass need?: American Dune Grass grows best in full sun conditions.
When does American Dune Grass bloom?: American Dune Grass blooms in June, July, and August.
Where is American Dune Grass native?: American Dune Grass (Leymus mollis) is native to CA, IL, MA, ME and 6 more states, per the World Checklist of Vascular Plants (Kew).
Is American Dune Grass toxic to livestock?: The USDA PLANTS Database does not flag American Dune Grass as toxic to livestock.
Is American Dune Grass HOA-friendly?: American Dune Grass is generally an HOA-friendly choice in the right placement, with low maintenance.

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 American Dune Grass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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