North America Native Plant

Arizona Brome

Botanical name: Bromus arizonicus

USDA symbol: BRAR4

Life cycle: annual

Habit: grass

Native status: Native to the lower 48 states  

Arizona Brome: A Native Grass for Water-Wise Gardens If you’re looking to add authentic southwestern character to your landscape while supporting local ecosystems, Arizona brome (Bromus arizonicus) might just be the unsung hero your garden needs. This native annual grass brings subtle beauty and ecological benefits to water-wise gardens across ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Arizona Brome: A Native Grass for Water-Wise Gardens

If you’re looking to add authentic southwestern character to your landscape while supporting local ecosystems, Arizona brome (Bromus arizonicus) might just be the unsung hero your garden needs. This native annual grass brings subtle beauty and ecological benefits to water-wise gardens across the American Southwest.

Meet Arizona Brome

Arizona brome is a native annual grass that calls the southwestern United States home. As its common name suggests, this hardy little grass has adapted perfectly to the challenging conditions of desert and semi-desert regions. While it might not win any flashy flower contests, it plays an important role in natural ecosystems and can bring authentic regional character to your landscape.

Where You’ll Find It Growing Wild

This native beauty naturally occurs across four southwestern states: Arizona, California, Nevada, and Texas. It’s perfectly adapted to the unique growing conditions of these regions, making it an excellent choice for gardeners who want to work with nature rather than against it.

Why Consider Arizona Brome for Your Garden?

Arizona brome offers several compelling reasons to include it in your landscape:

  • True native plant: Supporting local ecosystems by choosing plants that belong in your region
  • Water-wise choice: Once established, it requires minimal irrigation
  • Low maintenance: As an annual, it completes its life cycle naturally without ongoing care
  • Habitat value: Provides structure and shelter for beneficial insects and small wildlife
  • Authentic regional character: Adds genuine southwestern appeal to naturalized areas

What to Expect: Size and Appearance

Arizona brome is a delicate-looking annual grass that typically reaches 1 to 3 feet in height. It features slender stems and produces modest but attractive seed heads that add texture and movement to the garden. While it won’t dominate your landscape, it provides a lovely backdrop for showier native plants and contributes to a naturalized, authentic look.

Perfect Garden Settings

This native grass shines in several landscape applications:

  • Desert and xeriscape gardens: Perfect for water-wise landscaping
  • Natural areas: Ideal for creating authentic regional ecosystems
  • Wildlife gardens: Provides habitat structure and seeds for birds
  • Slope stabilization: Can help prevent erosion in natural settings
  • Meadow gardens: Works well mixed with other native grasses and wildflowers

Growing Conditions and Care

Arizona brome thrives in USDA hardiness zones 8-10, making it suitable for much of the southwestern United States. Here’s what it needs to flourish:

  • Sunlight: Full sun exposure
  • Soil: Well-draining soils; tolerates poor, rocky, or sandy conditions
  • Water: Minimal water requirements once established; drought tolerant
  • Climate: Adapted to arid and semi-arid conditions

Planting and Establishment Tips

Getting Arizona brome established in your garden is refreshingly straightforward:

  • Timing: Direct seed in fall for best results
  • Soil prep: Minimal soil preparation needed; this grass prefers lean conditions
  • Seeding: Scatter seeds over prepared area and lightly rake in
  • Water: Provide light irrigation until germination, then reduce watering
  • Maintenance: As an annual, it will self-seed and return naturally

A Note About Conservation

While specific conservation details for Arizona brome aren’t widely documented, choosing native plants like this one always supports local biodiversity and helps maintain the genetic diversity of regional plant communities. When sourcing seeds or plants, look for reputable native plant suppliers who collect responsibly.

The Bottom Line

Arizona brome may not be the showiest plant in the garden center, but it offers something increasingly valuable: authentic regional character with minimal environmental impact. For gardeners committed to creating water-wise, wildlife-friendly landscapes that reflect the natural beauty of the Southwest, this humble native grass deserves serious consideration.

While we’d love to share more specific details about wildlife benefits and ecological relationships, information about this particular species remains limited in gardening literature. What we do know is that native grasses like Arizona brome play important roles in their ecosystems and can contribute to creating more sustainable, regionally appropriate gardens.

Arizona 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 arizonicus (Shear) Stebbins - Arizona brome

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