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 World Checklist of Vascular Plants (Kew).

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.

Idaho Bentgrass

Name: Pollinator Patch
Author: Pollinator Patch

Agrostis idahoensis

Last reviewed: August 2026

Toxicity unknown

Idaho Bentgrass (Agrostis idahoensis) 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.

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

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 452 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

Northwestern Forested Mountains Sierra Nevada Southern California Mountains Central Basin and Range North American Deserts

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 World Checklist of Vascular Plants (Kew).
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 World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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