[Cal-IPC] Invasive: Avena barbata (slender wild oat) is a winter annual grass (family Poaceae) that grows in nearly every grassland area of the state. It does well in sandy/poor soils, often on the road verges. It is one of the annual grasses that was introduced as a forage species and has replaced the native perennial grasses.
Cal-IPC Rating: Moderate (contributed by Mary Ann Machi)
[Wikipedia] Central Asia & Mediterranean Basin native, Noxious weed: A. barbata is native to central Asia (as far east as Pakistan) and the Mediterranean Basin. As an introduced species it also occurs in other Mediterranean-like habitats of New Zealand, Australia, South Africa, Argentina, Chile, Brazil, and Uruguay. In Europe it has been reported in Finland, France, Germany, Norway, Bulgaria, and Austria. In North America it is an introduced species and noxious weed, where it is especially widespread in California. In California it has displaced native species of grass. It is also found in Oregon, Washington, Hawaii, Massachusetts, Nevada, Arizona, and New Mexico. (contributed by Mary Ann Machi)
2018 Julian Geoghegan:!2023 David popp:!2019 Ron Vanderhoff:!2021 John Rawlings:!2014 Jesse Rorabaugh:!2012 Stephanie Bishop:!2021 Ron Vanderhoff:!2019 Ron Vanderhoff:!2022 David popp:!
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2023. Berkeley, California:The Calflora Database
[a non-profit organization].Available: