How much sun does Mountain Oat Grass need?

Mountain Oat Grass grows best in full sun conditions.

When does Mountain Oat Grass bloom?

Mountain Oat Grass blooms in June, July, and August.

Where is Mountain Oat Grass native?

Mountain Oat Grass (Danthonia compressa) is native to AL, AR, CT, DE and 19 more states, per the World Checklist of Vascular Plants (Kew).

Is Mountain Oat Grass toxic to livestock?

The USDA PLANTS Database does not flag Mountain Oat Grass as toxic to livestock.

Is Mountain Oat Grass HOA-friendly?

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

Mountain Oat Grass

Name: Pollinator Patch
Author: Pollinator Patch

Danthonia compressa

Last reviewed: August 2026

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

Light

full sun

Water

low

Size

12"–24" H × 6"–12" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, CT, DE and 19 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.

Find rebates in your area

Browse plants for this ecoregion

Piedmont Northern Lakes and Forests Northeastern Highlands Northeastern Coastal Zone Northern Allegheny Plateau Erie Drift Plain Northern Forests Middle Atlantic Coastal Plain Northern Piedmont Blue Ridge Ridge and Valley Central Appalachians Western Allegheny Plateau Acadian Plains and Hills Eastern Great Lakes Lowlands Atlantic Coastal Pine Barrens

Mountain oat grass is a compact native bunch grass that forms neat, low clumps with fine-textured foliage. It produces delicate seed heads in summer and turns golden brown in fall before going dormant in winter.

In an HOA neighborhood

Mountain Oat Grass is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.

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

Goes completely dormant in winter

Wildlife value

This grass provides seeds for songbirds and small mammals in late summer and fall. The fine foliage offers shelter for beneficial insects and small wildlife.

Common questions

How much sun does Mountain Oat Grass need?: Mountain Oat Grass grows best in full sun conditions.
When does Mountain Oat Grass bloom?: Mountain Oat Grass blooms in June, July, and August.
Where is Mountain Oat Grass native?: Mountain Oat Grass (Danthonia compressa) is native to AL, AR, CT, DE and 19 more states, per the World Checklist of Vascular Plants (Kew).
Is Mountain Oat Grass toxic to livestock?: The USDA PLANTS Database does not flag Mountain Oat Grass as toxic to livestock.
Is Mountain Oat Grass HOA-friendly?: Mountain Oat 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 Mountain Oat Grass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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