Foxtail barley grass

Common Name(s)

Foxtail barley

Foxtail

Scientific Name

Hordeum jubatum

Family

Grass family (Poaceae)

Reasons for concern

The seed heads of this grass have a needle-like bristle at the tip of each seed called an awn, which can be dangerous for livestock and pets because awns can work their way into the animals’ mouth, nose, eyes, and digestive systems. This grass can form large stands that displace desirable native plant vegetation and important wildlife habitat.

Special note

Native plants have evolved together over centuries with pollinators, birds, wildlife and other native plants. We may not understand the role this native plant plays in our environment, so we may not want to completely eliminate it.

Classification

Native

Botanical description

Bunchgrass, distinguishable by its long awns or bristles.

Leaves

Leaves are flat to rolled, 1 to 6 inches long. Mature plant has flat leaf blades 1 to 6 inches long, evenly spaced with fine hairs along edges.

Stem(s)

Slender, erect, or lying on the ground with tips pointed up. Mature plant reaches 1 to 3 feet tall.

Seeds

Uppermost parts of stems have long, fine, needle-like, spreading, barbed awns or bristles, which are capable of burrowing into the soil where they germinate. When mature, seed heads dry up, split apart, and blow away on wind. Seed heads produced from late May to August. Germination occurs in the fall after a significant rainfall.

Roots

Shallow, fibrous root system. No rhizomes (horizontal underground stems).

Native to

North America

Where it grows

Wet or moist places. Grows along roadsides, disturbed habitats, and meadows at elevations of 5,000 to 7,500 feet.

Lifecycle

Short-lived perennial or annual

Reproduction

By seed and by tillers (or shoots) growing upright off the roots

Weedy Characteristics

Seeds of this grass are dispersed by wind and by humans and animals to which it clings.

Look-alike Plants

See separate entry for bottlebrush Squirreltail grass (Elymus elymoides). Seed heads of Squirreltail are larger than those of foxtail barley, and the large seeds of Squirreltail can be distinctly felt by the fingers. The barbed awns or bristles at the tip of Squirreltail stems are longer than those of foxtail. Foxtail flowers June through August, while Squirreltail flowers March through September.

Control Strategies

Do not let plants drop their seed heads. Cut them off before seeds drop, or thin out the population by digging up plants, being careful not to disturb soil too much. Population can be controlled with tillage.

Gallery

Foxtail barley is often found near water

References

Foxtail Barley Colorado State University Cooperative Extension
Foxtail Barley Range plants of Utah, Utah State University Cooperative Extension
Foxtail barley University of California Agriculture and Natural Resources – IPM Weed Gallery

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