North America Non-native Plant

Elymus Agropyroides

Botanical name: Elymus agropyroides

USDA symbol: ELAG2

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

The Mystery of Elymus agropyroides: A Grass That’s Hard to Pin Down If you’ve stumbled across the name Elymus agropyroides in your gardening research, you’re not alone in scratching your head. This particular grass species is something of an enigma in the botanical world – so much so that finding ...

The Mystery of Elymus agropyroides: A Grass That’s Hard to Pin Down

If you’ve stumbled across the name Elymus agropyroides in your gardening research, you’re not alone in scratching your head. This particular grass species is something of an enigma in the botanical world – so much so that finding reliable information about it feels like searching for a needle in a haystack.

What We Do Know

Elymus agropyroides belongs to the grass family (Poaceae) and falls within the Elymus genus, which includes various wheatgrasses and wildryes. These are typically bunch grasses that can range from small ornamental specimens to larger, more robust plants. However, when it comes to the specific details about E. agropyroides – well, that’s where things get fuzzy.

The Challenge of Obscure Species

Here’s the thing about plant identification: sometimes you encounter species names that exist in old botanical literature or regional studies but lack comprehensive documentation. Elymus agropyroides appears to fall into this category. It’s possible this name refers to:

  • A very localized or rare grass species with limited distribution
  • An older taxonomic name that has since been reclassified
  • A regional variant that hasn’t been thoroughly studied
  • A misidentification of a more common Elymus species

What This Means for Gardeners

If you’re trying to track down this particular grass for your garden, you might be facing an uphill battle. Without clear information about its native range, growing requirements, or even basic characteristics, it’s nearly impossible to provide meaningful cultivation advice.

Your best bet? If you encountered this name in a plant list or old reference, consider these alternatives:

  • Double-check the source – there might be a typo in the species name
  • Consult with local botanists or native plant societies
  • Consider well-documented Elymus species that are known to thrive in your area
  • Contact the organization or publication where you found the name for clarification

Better-Known Elymus Options

If you’re interested in the Elymus genus for your landscape, there are several well-documented species that make excellent garden plants. These include blue wildrye (Elymus glaucus), basin wildrye (Elymus cinereus), and Canada wildrye (Elymus canadensis), depending on your location and growing conditions.

The Takeaway

Sometimes in the plant world, mysteries remain mysteries – at least for now. Elymus agropyroides serves as a good reminder that not every plant name you encounter will have a wealth of growing information readily available. When in doubt, stick with well-documented native species for your region, and don’t be afraid to ask questions when something seems too obscure to be true.

If you do happen to have reliable information about Elymus agropyroides or have encountered it in the wild, the botanical community would surely appreciate your input. After all, every plant has a story – some are just harder to tell than others.

Elymus Agropyroides

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Elymus L. - wildrye

Species

Elymus agropyroides J. Presl

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