Mountain Brome
Bromus marginatus
- Native to:
- Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, United States
Howard F. Schwartz, Colorado State University, Bugwood.org





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Poaceae
- Genus:
- Bromus
- Species:
- Bromus marginatus
- USDA Symbol:
- BRMA4
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 120 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- may,jun,jul
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from crown and root system after fire. Common component of post-fire plant communities in western forests and meadows.
Soil Requirements
- Soil Type:
- fertile, well-drained loamy soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- prefers open, sunny locations
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 7–21 days
- Notes:
- Germinates readily with cold-moist stratification. Surface sow or barely cover as light may enhance germination.
The above propagation data sourced from Claude AI
Pre-treatment: Seeds can be placed in 0-1°C (32-34°F) for a 10-day cold stratification treatment and then exposed to 22-25°C (72-77°F). Alternatively, seeds can be treated with Carboxin or a similar compound to prevent head smut (Ustilago bullata) in subsequent seed crops.
Establishment: Germination time may vary depending on the conditions. Seedlings grow quickly and may flower in the first season but do not produce sufficient seed in the first season to make harvesting worthwhile.
Source: npn.rngr.net