Skip to main content

Pacific Reedgrass

Calamagrostis nutkaensis

Last reviewed: July 2026

Pacific Reedgrass (Calamagrostis nutkaensis)
Photo: Gordon Leppig & Andrea J. Pickart / Wikimedia Commons (Public domain)

Light

part sun

Water

medium

Size

24"–60" H × 12"–24" W

Bloom

Jun, Jul, Aug

Native to

CA, OR, WA

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

Pacific reedgrass is a tall, clumping native grass that forms upright tufts of narrow green leaves. It produces attractive feathery seed heads in summer and turns golden-brown in fall before going dormant in winter.

In an HOA neighborhood

Pacific Reedgrass is an HOA-friendly choice. Maintenance level: moderate. Tidiness: 3 out of 5.

Works well in: mid zone, street edge.

  • Can look untidy when dormant in winter
  • May appear too informal for formal front yards
  • Requires annual cutting back for neat appearance

Wildlife value

This grass provides nesting material and cover for birds, while its seeds feed songbirds and small mammals. The dense clumps offer shelter for beneficial insects throughout the growing season.

Common questions

How much sun does Pacific Reedgrass need?
Pacific Reedgrass grows best in part sun conditions.
When does Pacific Reedgrass bloom?
Pacific Reedgrass blooms in June, July, and August.
Where is Pacific Reedgrass native?
Pacific Reedgrass (Calamagrostis nutkaensis) is native to CA, OR, WA, per vouchered herbarium specimen records and regional native plant society lists.
Is Pacific Reedgrass HOA-friendly?
Pacific Reedgrass is generally an HOA-friendly choice in the right placement, with moderate maintenance.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Pacific Reedgrass? 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