Selected Plants of Navajo Rangelands

Take care of our Navajo Rangelands

Cheatgrass
Shíyináldzidí

Open panicle with dry seeds and barbed awns

Cheatgrass is an invasive cool-season annual grass from the Mediterranean. It has solitary stems 4 to 24 inches tall, with soft drooping seedheads. Cheatgrass can provide good forage for a short time, but matures quickly and becomes unpalatable. At maturity, the plant turns reddish and cures to a light tan. After curing, late spring cheatgrass becomes highly flammable and has changed the fire frequency of western rangelands.

In Europe, cheatgrass historically grew in the decaying straw of thatched roofs. "Tectum" is Latin for roof, hence the name Bromus tectorum, "brome of the roofs." Cheatgrass has developed into a severe weed in several agricultural systems throughout North America, particularly western pastureland, rangeland, and winter wheat fields. It is now estimated to infest more than 101 million acres in western states.

Herbarium specimen showing seedheads and stalks
Dry seedheads with awns
Distinctive seeds with awns flaring outward
Bristly seeds with awns
Drooping seedheads of a tall grass, dry yellow/whiteish, with tangled vegetation in the background.

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