North America Native Plant

Great Basin Brome

Botanical name: Bromus polyanthus var. paniculatus

USDA symbol: BRPOP

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Bromus paniculatus (Shear) Rydb. (BRPA8)   

Great Basin Brome: A Native Grass for Southwestern Gardens If you’re looking to add authentic southwestern character to your landscape, Great Basin brome (Bromus polyanthus var. paniculatus) might just be the native grass you’ve been searching for. This perennial grass brings a touch of the wild west to gardens while ...

Great Basin Brome: A Native Grass for Southwestern Gardens

If you’re looking to add authentic southwestern character to your landscape, Great Basin brome (Bromus polyanthus var. paniculatus) might just be the native grass you’ve been searching for. This perennial grass brings a touch of the wild west to gardens while supporting local ecosystems in ways that non-native alternatives simply can’t match.

What Makes Great Basin Brome Special?

Great Basin brome is a true native of the American Southwest, naturally occurring across Arizona, Colorado, New Mexico, and Utah. As a perennial grass, it returns year after year, establishing itself as a reliable presence in the landscape. You might also see it listed under its synonym, Bromus paniculatus, in some gardening references.

Where Does It Naturally Grow?

This hardy grass has made its home across four southwestern states, thriving in the diverse conditions found throughout this region. From the high country of Colorado to the desert landscapes of Arizona, Great Basin brome has adapted to life in some of America’s most challenging yet beautiful environments.

Is Great Basin Brome Right for Your Garden?

Here’s where things get interesting – and a bit challenging. While Great Basin brome is undoubtedly a legitimate native plant with a place in southwestern ecosystems, detailed growing information for this specific variety is surprisingly scarce in gardening literature. This isn’t uncommon with native grasses that haven’t made the leap into mainstream horticulture.

What we do know is that as a native of the Great Basin and surrounding regions, this grass is likely well-adapted to:

  • Dry, arid conditions
  • Temperature extremes
  • Poor or rocky soils
  • Low water availability

Growing Conditions and Care

Based on its native habitat, Great Basin brome probably thrives in USDA hardiness zones 4-8, though this is an educated guess based on its geographic distribution. Like most native grasses from arid regions, it likely prefers:

  • Full sun exposure
  • Well-draining soil
  • Minimal supplemental watering once established
  • Little to no fertilization

The challenge for home gardeners is that this grass isn’t widely available through typical nursery channels, and specific cultivation advice is limited.

The Bottom Line for Gardeners

Great Basin brome represents an interesting case study in native plant gardening. While it’s certainly a legitimate native species that could theoretically enhance a southwestern landscape, the practical reality is that it’s not well-established in the horticultural trade.

If you’re drawn to the idea of incorporating native brome grasses into your landscape, you might have better luck with more widely available native alternatives that offer similar ecological benefits and are better understood from a cultivation standpoint. Consider researching other native grasses in the Bromus genus or consulting with local native plant societies who might have experience with this particular variety.

Sometimes the most authentic native gardening experience comes from working with plants that bridge the gap between wild authenticity and garden practicality – and Great Basin brome might be just a little too wild for most home landscapes, at least for now.

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