When does wavy hairgrass bloom?

Wavy hairgrass typically produces its delicate, shimmering flower panicles from May through August, with the display often peaking in early summer.

What growing conditions does wavy hairgrass prefer?

This grass does best in low water, well drained soil and part shade, though it can handle brighter or somewhat shadier spots once established. It is a good choice for dry, sandy or rocky sites.

What insects are associated with wavy hairgrass?

Bees and beetles are commonly observed visiting wavy hairgrass, drawn to the plant during its bloom period.

Is wavy hairgrass evergreen?

The narrow foliage is semi-evergreen in many climates, staying green or bronze through much of the year before dieback in harsher winters.

Is Wavy Hairgrass HOA-friendly?

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

Wavy Hairgrass

Name: Pollinator Patch
Author: Pollinator Patch

Avenella flexuosa

Last reviewed: August 2026

Wavy hairgrass is a fine textured, clump forming grass with airy gold bronze flower panicles from late spring into summer. It grows well on dry, rocky slopes and open woodland edges in part shade across the northeastern United States.

Toxicity unknown

Wavy Hairgrass (Avenella flexuosa) 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.

Light

part shade

Water

medium

Size

12"–24" H × 6"–12" W

Bloom

May, Jun, Jul, Aug

Native to

AL, AR, CT, DE and 29 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

Piedmont Northern Lakes and Forests North Central Hardwood Forests Southern Michigan/Northern Indiana Drift Plains Northeastern Highlands Northeastern Coastal Zone Northern Allegheny Plateau Northern Forests Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Blue Ridge Ridge and Valley Eastern Temperate Forests Central Appalachians Acadian Plains and Hills Eastern Great Lakes Lowlands Atlantic Coastal Pine Barrens

Wavy hairgrass is a delicate native bunch grass that forms small, tidy clumps with fine-textured foliage. It produces airy, graceful seed heads from late spring through summer that sway gently in the breeze. This compact grass works well as an accent plant or groundcover in partially shaded areas.

In an HOA neighborhood

Wavy Hairgrass 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

The seeds provide food for small birds and the grass offers nesting material. As a native grass, it supports various insects that serve as food sources for birds.

Common questions

When does wavy hairgrass bloom?: Wavy hairgrass typically produces its delicate, shimmering flower panicles from May through August, with the display often peaking in early summer.
What growing conditions does wavy hairgrass prefer?: This grass does best in low water, well drained soil and part shade, though it can handle brighter or somewhat shadier spots once established. It is a good choice for dry, sandy or rocky sites.
What insects are associated with wavy hairgrass?: Bees and beetles are commonly observed visiting wavy hairgrass, drawn to the plant during its bloom period.
Is wavy hairgrass evergreen?: The narrow foliage is semi-evergreen in many climates, staying green or bronze through much of the year before dieback in harsher winters.
Is Wavy Hairgrass HOA-friendly?: Wavy Hairgrass 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 Wavy Hairgrass? 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

Planning a bed around it? Start a free plan with this plant

Not sure where to start? Take the 2-minute yard quiz