North America Native Plant

Great Basin Brome

Botanical name: Bromus polyanthus var. polyanthus

USDA symbol: BRPOP2

Life cycle: perennial

Habit: grass

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Ceratochloa polyantha (Scribn. ex Shear) Tzvelev (CEPO3)   

Great Basin Brome: A Native Grass Worth Growing If you’re looking to add authentic western character to your landscape while supporting local ecosystems, Great Basin brome (Bromus polyanthus var. polyanthus) might just be the perfect native grass for your garden. This robust perennial bunchgrass brings both beauty and ecological value ...

Great Basin Brome: A Native Grass Worth Growing

If you’re looking to add authentic western character to your landscape while supporting local ecosystems, Great Basin brome (Bromus polyanthus var. polyanthus) might just be the perfect native grass for your garden. This robust perennial bunchgrass brings both beauty and ecological value to naturalized landscapes across much of western North America.

What Makes Great Basin Brome Special

Great Basin brome is a true native treasure, naturally occurring across an impressive range that spans from British Columbia down through the western United States. You’ll find this adaptable grass thriving in Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Washington, and Wyoming. Its widespread distribution tells us something important: this is one tough, adaptable plant!

As a perennial grass, Great Basin brome establishes deep roots and returns year after year, making it an excellent long-term investment for your landscape. The plant forms attractive clumps with tall, graceful stems topped by open, somewhat drooping seed heads that dance beautifully in the breeze.

Where Great Basin Brome Shines in Your Landscape

This native grass truly excels in naturalized settings where you want that authentic wild west look. Here are some ideal uses:

  • Native plant gardens that celebrate regional flora
  • Erosion control on slopes and disturbed areas
  • Wildlife habitat restoration projects
  • Naturalized meadows and prairie-style landscapes
  • Low-maintenance areas where you want year-round interest

Great Basin brome works particularly well as a backdrop plant, providing texture and movement while allowing more colorful native wildflowers to take center stage.

Growing Conditions and Care

One of the best things about Great Basin brome is its easygoing nature. This grass is well-suited to USDA hardiness zones 4-9, making it adaptable to a wide range of climates.

For optimal growth, provide:

  • Full sun to partial shade (though it prefers sunny locations)
  • Well-draining soil – it’s not particular about soil type
  • Dry to moderately moist conditions
  • Minimal irrigation once established

The beauty of native plants like Great Basin brome is that they’re naturally adapted to local conditions. Once established, this grass is notably drought tolerant and requires very little maintenance – perfect for busy gardeners or those practicing water-wise landscaping.

Planting and Establishment Tips

Getting Great Basin brome established is straightforward:

  • Plant seeds in fall or early spring when natural moisture is most available
  • Lightly rake seeds into the soil surface – don’t bury them deeply
  • Water gently until germination occurs
  • Be patient – native grasses can take time to establish but are worth the wait
  • Reduce watering gradually as plants mature

Remember that native grasses often put energy into root development first, so don’t be discouraged if top growth seems slow initially. Those deep roots are building the foundation for years of reliable performance.

Wildlife and Ecosystem Benefits

While Great Basin brome may not be a showy pollinator magnet (it’s wind-pollinated, like most grasses), it provides valuable ecosystem services. The seeds feed birds and small mammals, while the grass structure offers nesting sites and cover for wildlife. When you plant native grasses like this one, you’re contributing to the local food web and supporting biodiversity.

Is Great Basin Brome Right for Your Garden?

Great Basin brome is an excellent choice if you’re looking for a low-maintenance, drought-tolerant native grass that provides authentic regional character. It’s particularly valuable for gardeners interested in supporting local ecosystems, managing erosion, or creating naturalized landscapes that look at home in the western landscape.

However, if you’re seeking a formal, manicured look or need a grass for high-traffic areas, you might want to consider other options. This is a plant that shines in more relaxed, naturalistic settings where its wild beauty can be fully appreciated.

By choosing Great Basin brome, you’re not just adding a beautiful plant to your landscape – you’re connecting your garden to the greater ecosystem and celebrating the natural heritage of western North America. That’s something worth growing!

Great Basin Brome

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

Bromus L. - brome

Species

Bromus polyanthus Scribn. ex Shear - Great Basin brome

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