When does slender wheatgrass bloom?

Slender wheatgrass typically flowers from May through July, producing narrow upright seed heads on slender stems.

How much water does slender wheatgrass need?

Once it is established, slender wheatgrass gets by on low water and tolerates dry spells well, though it also handles medium moisture in cooler seasons.

What growing conditions does slender wheatgrass prefer?

This bunchgrass performs best in full sun to part sun and adapts to a range of soils, from prairie sites to roadsides and other open, disturbed ground.

What pollinators visit slender wheatgrass?

Bees and beetles are known to forage on the pollen of slender wheatgrass, though like most grasses it relies mainly on wind for pollination.

Is slender wheatgrass evergreen?

No, it is a deciduous cool season grass that dies back after flowering and regrows the following season.

Is Slender Wheatgrass toxic to livestock?

The USDA PLANTS Database does not flag Slender Wheatgrass as toxic to livestock.

Is Slender Wheatgrass HOA-friendly?

Slender Wheatgrass is generally an HOA-friendly choice in the right placement, with low maintenance.

Slender Wheatgrass

Name: Pollinator Patch
Author: Pollinator Patch

Elymus trachycaulus

Last reviewed: September 2026

Slender wheatgrass is a cool season bunchgrass that blooms from May through July and grows well in full sun with low water once established, suited to prairies, meadows and open disturbed ground.

Toxicity unknown

Slender Wheatgrass (Elymus trachycaulus) 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 Slender Wheatgrass as toxic to livestock.

Light

full sun

Water

low

Size

12"–48" H × 6"–24" W

Bloom

May, Jun, Jul

Native to

AZ, CA, CO, CT and 36 more states

Pollinators

bees, beetles

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 460 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Picture natives in your own yard

Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Slender Wheatgrass.

Try it with your yard

Slender wheatgrass is a native bunchgrass that forms attractive clumps with narrow blue-green leaves. It produces delicate seed heads in late spring through summer, then goes dormant in winter with golden-brown foliage.

Growing Slender Wheatgrass

Grow Slender Wheatgrass in full sun and low water. Mature plants reach 12 to 48 inches tall and spread 6 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Slender Wheatgrass is an HOA-friendly choice in the right placement. Maintenance level: low. Tidiness: 3 out of 5.

Works well in: mid zone, street edge.

Goes completely dormant and brown in winter
May appear too informal for formal front yards
Seed heads can look messy to some

Wildlife value

The flowers attract bees and beetles during the blooming period. Seeds provide food for birds and small mammals.

Common questions

When does slender wheatgrass bloom?: Slender wheatgrass typically flowers from May through July, producing narrow upright seed heads on slender stems.
How much water does slender wheatgrass need?: Once it is established, slender wheatgrass gets by on low water and tolerates dry spells well, though it also handles medium moisture in cooler seasons.
What growing conditions does slender wheatgrass prefer?: This bunchgrass performs best in full sun to part sun and adapts to a range of soils, from prairie sites to roadsides and other open, disturbed ground.
What pollinators visit slender wheatgrass?: Bees and beetles are known to forage on the pollen of slender wheatgrass, though like most grasses it relies mainly on wind for pollination.
Is slender wheatgrass evergreen?: No, it is a deciduous cool season grass that dies back after flowering and regrows the following season.
Is Slender Wheatgrass toxic to livestock?: The USDA PLANTS Database does not flag Slender Wheatgrass as toxic to livestock.
Is Slender Wheatgrass HOA-friendly?: Slender Wheatgrass is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

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

Ready to grow Slender Wheatgrass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Add this plant to your garden

iPhone app Android app