Idaho Bentgrass
Agrostis idahoensis
Last reviewed: June 2026
The USDA PLANTS Database (opens in new tab) does not flag Idaho Bentgrass as toxic to livestock.
Light
full sun
Water
low
Size
6"–24" H × 4"–12" W
Bloom
May, Jun, Jul
Native to
AZ, CA, CO, ID and 7 more states
Browse plants for this ecoregion
A fine-textured native bunch grass that forms neat, compact clumps. It produces delicate seed heads in late spring and early summer, then maintains an attractive low profile through the growing season.
In an HOA neighborhood
Idaho Bentgrass is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
This native grass provides seed for songbirds and small mammals. The fine foliage offers nesting material and shelter for beneficial insects.
Common questions
- How much sun does Idaho Bentgrass need?
- Idaho Bentgrass grows best in full sun conditions.
- When does Idaho Bentgrass bloom?
- Idaho Bentgrass blooms in May, June, and July.
- Where is Idaho Bentgrass native?
- Idaho Bentgrass (Agrostis idahoensis) is native to AZ, CA, CO, ID and 7 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Idaho Bentgrass toxic to livestock?
- The USDA PLANTS Database does not flag Idaho Bentgrass as toxic to livestock.
- Is Idaho Bentgrass HOA-friendly?
- Idaho Bentgrass is generally an HOA-friendly choice in the right placement, with low maintenance.
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 Idaho Bentgrass? 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