North America Native Plant

Wildrye

Botanical name: Elymus ×pinaloensis

USDA symbol: ELPI3

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: ×Agrositanion pinaloense Pyrah (AGPI4)   

Wildrye: The Mysterious Arizona Native Worth Knowing About Meet Elymus ×pinaloensis, commonly known as wildrye – a native grass that’s as enigmatic as it is intriguing. If you’ve never heard of this particular wildrye, you’re definitely not alone. This perennial grass is one of those hidden gems of the plant ...

Wildrye: The Mysterious Arizona Native Worth Knowing About

Meet Elymus ×pinaloensis, commonly known as wildrye – a native grass that’s as enigmatic as it is intriguing. If you’ve never heard of this particular wildrye, you’re definitely not alone. This perennial grass is one of those hidden gems of the plant world that even seasoned native plant enthusiasts might not have encountered.

What Makes This Wildrye Special?

The × in its botanical name tells us something fascinating – this is a hybrid species, meaning it’s the natural offspring of two different wildrye parents. Think of it as nature’s own plant breeding experiment! As a member of the grass family, this wildrye shares the characteristic features that make grasses so valuable in landscapes: they’re typically low-maintenance, drought-tolerant once established, and provide important habitat for wildlife.

Where You’ll Find This Native Treasure

Elymus ×pinaloensis calls Arizona home, making it a true southwestern native. Its distribution appears to be quite limited within the state, which might explain why there’s relatively little information available about this particular species compared to its more common wildrye cousins.

The Gardener’s Dilemma: To Plant or Not to Plant?

Here’s where things get a bit tricky. While this wildrye is undoubtedly a legitimate Arizona native, the lack of readily available cultivation information presents some challenges for home gardeners. Unlike well-documented native grasses like blue grama or buffalo grass, we simply don’t have detailed growing guides for this particular species.

What We Do Know

As a perennial grass native to Arizona, we can make some educated assumptions about Elymus ×pinaloensis:

  • It’s likely adapted to arid or semi-arid conditions
  • It probably prefers well-draining soils
  • As a native, it should support local wildlife once established
  • Being perennial, it would return year after year

Growing Considerations

If you’re determined to grow this particular wildrye, you’ll need to become something of a plant detective. Since specific cultivation information isn’t readily available, you’d want to:

  • Source seeds or plants from reputable native plant suppliers
  • Study the growing conditions of other Arizona wildrye species
  • Consider your local soil and climate conditions
  • Be prepared for some trial and error

Native Alternatives Worth Considering

If you’re looking to add native grasses to your Arizona landscape, you might want to consider these well-documented alternatives:

  • Blue grama (Bouteloua gracilis)
  • Sideoats grama (Bouteloua curtipendula)
  • Arizona fescue (Festuca arizonica)
  • Other Elymus species with more cultivation information

The Bottom Line

Elymus ×pinaloensis represents the fascinating world of native plant diversity that exists in our southwestern landscapes. While it may not be the easiest choice for beginning native gardeners due to limited cultivation information, it’s exactly the kind of plant that makes experienced native plant enthusiasts excited about conservation and habitat restoration.

If you do decide to grow this mysterious wildrye, you’ll be participating in the important work of preserving Arizona’s botanical heritage – just be sure to source your plants responsibly and prepare for an adventure in native gardening!

Wildrye

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 ×pinaloensis (Pyrah) Barkworth & D.R. Dewey [arizonicus × hystrix] - wildrye

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