Plant Image
Plant - summer
Watson Lake

Yavapai County Native & Naturalized Plants

Bromus tectorum - cheatgrass

Synonyms: Anisantha tectorum, B. tectorum var. glabratus, B. tectorum var. hirsutus B. tectorum var. nudus
Other Common Names: cheat brome, downy chess, downy brome, early chess, military grass, wild oats
Plant Form: Grass

Family: Poaceae

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Plant - summer
Watson Lake
Sue Smith
Watson Lake
Sue Smith
  Grass Description -   Glossary of Grass Terminology

Origin: Introduced    Season: Cool
Habitat Description: Disturbed sites, such as overgrazed rangelands, fields, sand dunes, roads, and waste places.
Plant Communities:Disturbed Areas
Elevation: 500 - 6000 feet

General Description

Desc: Erect, usually multi-stemmed annual grass with drooping seedheads that may form large stands on disturbed places. Many seeds are produced by such a small plant.
Identification Notes: Highly invasive annual grass with many erect unbranched stems, 1 to 2 feet tall; blades flat and hairy; spikelet stems long and drooping; lemmas broad, rounded, apical teeth <1 mm long; awns straight, arising below the lemma apices, 1/2 inch long.
Grass Type: Annual  Rhizomes: N  Stolons: N
Large Dense Clump (> 2 feet): N  Bushy (highly branched): N
Height with Seedheads: 12 to 24 inches
Seedhead Structure: Branched - open and spreading  Seedhead Droops: Y
Flowering Period: May - Jun
Flower Characteristics

Number of Flowers per Spikelet: Multi-flowered  Spikelets One-sided: N
Awns: 1/4 inch to 1 inch   Three Awns: N  Awns Bent: N
Flower and Seedhead Notes: Open, with the spikelets drooping on slender stems, often purple. Lemmas hairy.
Vegetative Charcteristics

Blade Hairy: Y    Blade with White Margins: N    Blade Cross section: Flat
Blade Notes: Blades short, 1/2 to 1-1/4 inches long, to 1/4 inch wide, covered with soft fine hairs.
Sheath Hairy: Y    Tuft of Hairs at top of Sheath or Collar: N    Ligules: Membranous
Auricles (Ear-like lobes at collar area: N

Forage Value: Good when green before setting seedheads. After, poor sparse feed. Awns may penetrate facial tissues of grazing animals.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
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