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North America Native Plant

Agroelymus

Agroelymus: A Rare Native Grass Hybrid Worth Knowing Meet agroelymus (×Agroelymus adamsii), a fascinating native grass that represents something quite special in the plant world – it’s actually a natural hybrid! The × symbol in its scientific name tells us this perennial grass is the result of crossbreeding between two ...

Agroelymus: A Rare Native Grass Hybrid Worth Knowing

Meet agroelymus (×Agroelymus adamsii), a fascinating native grass that represents something quite special in the plant world – it’s actually a natural hybrid! The × symbol in its scientific name tells us this perennial grass is the result of crossbreeding between two different grass genera, creating something unique in nature’s own laboratory.

Where Does Agroelymus Call Home?

This hardy perennial grass is native to Canada, specifically found growing in Quebec. As a true native species, agroelymus has evolved to thrive in the challenging northern climate conditions of eastern Canada, making it a valuable addition to native plant gardens in similar climates.

What Makes This Grass Special?

Agroelymus belongs to the large and diverse family of grasses and grass-like plants, which includes not just traditional grasses but also sedges, rushes, and other similar species. As a perennial, this grass will return year after year once established, providing long-term structure and texture to your landscape.

Being a hybrid species, agroelymus represents nature’s own experiment in combining the best traits of its parent species. This often results in plants that are particularly hardy and adaptable, though detailed information about this specific hybrid’s characteristics is quite limited in horticultural literature.

Should You Plant Agroelymus in Your Garden?

Here’s where things get interesting – and a bit challenging. While agroelymus is undoubtedly a legitimate native species with potential garden value, detailed information about its specific growing requirements, appearance, and garden performance is scarce. This rarity in cultivation means:

  • You’ll be pioneering with a truly uncommon native plant
  • It likely requires conditions similar to other northern hardy grasses
  • Finding seeds or plants may prove challenging
  • You’ll be contributing to the preservation of rare native genetics

Growing Conditions and Care

While specific growing information for agroelymus is limited, we can make educated assumptions based on its Canadian origins and grass family membership. Like most northern native grasses, it likely prefers:

  • Full sun to partial shade conditions
  • Well-draining soil (though tolerance levels are unknown)
  • Cold hardiness appropriate for northern climates
  • Minimal maintenance once established

As with any native grass, patience is key during establishment. Most native grasses spend their first year developing extensive root systems rather than impressive top growth – remember the saying first year they sleep, second year they creep, third year they leap!

The Challenge and the Reward

Agroelymus presents both an opportunity and a challenge for native plant enthusiasts. On one hand, you’d be growing a truly rare native species that represents unique genetic diversity. On the other hand, the lack of detailed cultivation information means you’ll be somewhat experimenting.

If you’re interested in trying this uncommon native grass, your best bet is connecting with native plant societies in Quebec or specialized native grass suppliers who might have experience with rare species. Always ensure any plant material is ethically and sustainably sourced.

For gardeners seeking reliable native grass alternatives with similar northern hardiness, consider exploring other well-documented native grasses from the region, such as various Elymus or Agropyron species that might be more readily available and have established growing guidelines.

Agroelymus

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

×Agroelymus E.G. Camus ex A. Camus - agroelymus

Species

×Agroelymus adamsii Rouss. [Agropyron repens × Elymus mollis] - agroelymus

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