Great Brome (Bromus diandrus)

Great Brome

Bromus diandrus

Its fine, arching blades bring soft texture to grassy landscapes. Annual cool-season grass; common names: great brome, ripgut brome.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates dry, low-nutrient growing conditions
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Watering Water deeply but infrequently; drought-tolerant once established, with no need for regular irrigation in rainy regions
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Temperature Hardy to light frost (down to 0°C); prefers cool to temperate growing temperatures
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Characteristics

  • Leaf: Flat, linear blades 10–30 cm long, rough-textured with fine hairs
  • Flower: Open, branching panicles with drooping spikelets; seed heads have sharp awns
  • Stem: Erect, hollow, smooth to slightly hairy stems
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Care Guide

Watering

Keep soil slightly moist during active growth; reduce watering during extreme heat to prevent root stress

Fertilization

Optional light, low-nitrogen feed only if soil is severely nutrient-poor. No regular fertilization is required for healthy growth in most soils

Banana peel compost tea:Fully compost banana peels before use; dilute 1:20 with water for root drenching to avoid attracting pests or causing soil imbalances
Pruning
  • Mow or trim seed heads before they mature to prevent unwanted self-seeding in managed areas
  • Remove dead, brown foliage in early spring to promote new, healthy growth
  • Thin dense clumps occasionally to improve airflow and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no adverse effects reported

Humans: No toxic effects reported for human ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Young foliage used as forage for livestock; aids soil stabilization in disturbed areas