Non-native Plants

Chee Reedgrass

Calamagrostis epigeios glomerata

USDA symbol: CAEPG

perennial grass

Lower 48 states: non-native, naturalized

If you’ve stumbled across the name chee reedgrass in your gardening research, you’re not alone in wondering what exactly this plant is all about. Chee reedgrass (Calamagrostis epigeios glomerata) is one of those plants that seems to fly under the radar, with surprisingly little information readily available to home gardeners. ...

Chee Reedgrass: What You Need to Know About This Mysterious Grass

If you’ve stumbled across the name chee reedgrass in your gardening research, you’re not alone in wondering what exactly this plant is all about. Chee reedgrass (Calamagrostis epigeios glomerata) is one of those plants that seems to fly under the radar, with surprisingly little information readily available to home gardeners.

The Basics: What Is Chee Reedgrass?

Chee reedgrass is a perennial grass that belongs to the larger family of grasses and grass-like plants. You might also see it listed under its scientific synonyms, including Calamagrostis arenicola Fernald, though botanists seem to have had their fair share of back-and-forth about what to call this particular plant.

Here’s what we do know for certain: this grass is not native to North America. It’s what botanists call an introduced species, meaning it arrived here from somewhere else and has managed to establish itself in the wild without human help.

Where You’ll Find It Growing

Currently, chee reedgrass has been documented growing in just three states: Massachusetts, New York, and Pennsylvania. It’s quite possible it exists in other locations, but these are the confirmed spots where it’s been identified and recorded.

  • Species observed
  • No observations

Should You Plant Chee Reedgrass?

Here’s where things get a bit tricky. Since this is a non-native plant with limited available information about its behavior in gardens and landscapes, it’s hard to give a definitive thumbs up or thumbs down. We simply don’t have enough data about:

  • How aggressively it spreads
  • What kind of growing conditions it prefers
  • How tall it gets or how much space it needs
  • Whether it provides benefits to local wildlife
  • Its potential impact on native plant communities

Better Safe Than Sorry: Native Alternatives

Given the uncertainty around chee reedgrass, you might want to consider some well-known native grass alternatives that can provide similar ornamental value without the question marks. Some great options include:

  • Little bluestem (Schizachyrium scoparium) – a beautiful native bunch grass
  • Buffalo grass (Poaceae family natives) – depending on your region
  • Native sedges (Carex species) – for a grass-like appearance with proven wildlife benefits

The Bottom Line

Chee reedgrass remains something of an enigma in the gardening world. While it’s not currently flagged as invasive or noxious, the lack of available growing information makes it a bit of a wild card for home gardeners. If you’re set on trying something new and unusual, you might be better off exploring the many fantastic native grasses that are well-documented, easier to source, and guaranteed to support local ecosystems.

Sometimes the most interesting plants are the ones that keep a little mystery about them – but when it comes to your garden, you probably want something with a bit more of a track record!

Calamagrostis epigeios glomerata is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Calamagrostis epigeios glomerata is also known as:

Calamagrostis arenicola | USDA symbol: CAAR27
Calamagrostis epigeios Roth var. georgica | USDA symbol: CAEPG2

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae Barnhart - Grass family
Genus: Calamagrostis Adans. - reedgrass

Species: Calamagrostis epigeios (L.) Roth - chee reedgrass

Subspecies: Calamagrostis epigeios (L.) Roth ssp. glomerata (Boiss. & Buhse) Tzvelev - chee reedgrass

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA