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Taxon  Report  
Avena fatua  L.
Wild oat,   Wildoat
Avena fatua is an annual grasslike herb that is not native to California.
Cal-IPC rating: moderate
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~4381 records in California
redone or more occurrences
within a 7.5-minute quadrangle
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Bloom Period
Genus: Avena
Family: Poaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTSAvena fatua var. glabrata
PLANTSAvena fatua var. vilis
Information about  Avena fatua from other sources

[Cal-IPC] Invasive: Avena fatua (wild oat) is a winter annual grass (family Poaceae) that is a common agricultural weed. It grows in most grassland sites within the state, particularly 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 (link added by Mary Ann Machi)

[Wikipedia] Eurasia native, Description: Avena fatua is a species of grass in the oat genus. It is known as the common wild oat. This oat is native to Eurasia but it has been introduced to most of the other temperate regions of the world. It is naturalized in some areas and considered a noxious weed in others.[2][3][4] Avena fatua is a typical oat in appearance, a green grass with hollow, erect stems 1 to 4 feet (30?120 cm) tall bearing nodding panicles of spikelets. The long dark green leaves are up to a centimeter wide and rough due to small hairs. The seedlings are also hairy. The seed kernel is thinner, longer, darker and hairy when compared with the seed of the common cultivated oat (Avena sativa). This species and other wild oats can become troublesome in prairie agriculture when it invades and lowers the quality of a field crop, or competes for resources with the crop plants. It takes very few wild oat plants to cause a significant reduction in the yield of a wheat or cultivated oat field, even though the seeds are a type of oat. (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/22/2024).