Non-native Plants

Elymus Dahuricus Excelsus

Elymus dahuricus excelsus

USDA symbol: ELDAE

If you’ve stumbled across the name Elymus dahuricus excelsus in your plant research, you’re not alone in wondering what exactly this grass is all about. This particular member of the grass family falls into that interesting category of plants that exist in botanical literature but don’t have much fanfare in ...

Elymus dahuricus excelsus: A Little-Known Grass Worth Understanding

If you’ve stumbled across the name Elymus dahuricus excelsus in your plant research, you’re not alone in wondering what exactly this grass is all about. This particular member of the grass family falls into that interesting category of plants that exist in botanical literature but don’t have much fanfare in the gardening world.

What We Know About This Mysterious Grass

Elymus dahuricus excelsus belongs to the graminoid group, which is botanist-speak for grass or grass-like plant. It’s related to the wildrye grasses and has a botanical synonym of Elymus excelsus Turcz. ex Griseb., if you’re keeping track of scientific names (and who isn’t, right?).

The dahuricus part of its name gives us a clue about its likely origins – it suggests connections to the Dahurian region of northeastern Asia. However, specific information about its native range and distribution remains frustratingly elusive.

The Challenge of Limited Information

Here’s where things get a bit tricky for us gardeners. While this grass exists in botanical records, detailed information about its:

  • Growing requirements and preferred conditions
  • Mature size and growth habits
  • Wildlife and pollinator benefits
  • Invasive potential or native status
  • USDA hardiness zones

…is simply not readily available in reliable gardening sources.

Should You Plant It?

Given the lack of comprehensive growing information and unclear native status, most gardeners would be better served choosing well-documented native grasses for their landscapes. Without knowing this plant’s invasive potential, environmental requirements, or ecological benefits, it’s hard to recommend it with confidence.

Better Alternatives to Consider

Instead of taking a chance on this botanical mystery, consider these well-studied native grass options:

  • Regional native wildrye species (Elymus species native to your area)
  • Local bunch grasses appropriate for your climate
  • Prairie grasses with documented wildlife benefits

Your local native plant society or extension office can help you identify the best native grass species for your specific region and growing conditions.

The Bottom Line

While Elymus dahuricus excelsus might sound intriguing, the lack of available growing information makes it a risky choice for most gardeners. When it comes to creating beautiful, functional landscapes that support local ecosystems, sticking with well-documented native plants is usually your best bet. Save the botanical mysteries for the researchers, and choose grasses that come with clear growing guides and proven environmental benefits.

Elymus dahuricus excelsus 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. Elymus dahuricus excelsus is also known as:

Elymus excelsus ex | USDA symbol: ELEX2

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: Elymus L. - wildrye

Species: Elymus dahuricus Turcz. ex Griseb. - Dahurian wild rye

Subspecies: Elymus dahuricus Turcz. ex Griseb. ssp. excelsus (Turcz. ex Griseb.) Tzvelev

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