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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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Why is this species a problem?

False-brome is known to form dense patches in disturbed areas (roads, streams). Seed is then carried into undisturbed forest, woodland and grasslands.

Despite being a bunch grass, false-brome has a large numer of seeds that allow it to cover and dominate both forest floor - tolerating up to 80% shade - and bright, open spaces like meadows or oak savannahs. Like many species, the arrival of false-brome often reduces plant and animal diversity because it displaces natives. It also reduces tree seedlings that replace old, fallen trees.

 seeds spread by birdsspread by seeds clinging to boots seeds spread by running water  spreads by seeds clinging to animal fur   seeds spread by clinging to tires