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Washington State Noxious Weed Control Board |
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Class B Noxious Weed
Oxeye Daisy
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Other common names:
white daisy, whiteweed, field daisy, marguerite, poorland flower
Plant family:
Compositae (Asteraceae)
Year listed:
2000?
Native to: Europe
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Why is it a noxious weed? |
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Oxeye daisy aggressively invades fields, where it
forms dense populations, thus decreasing plant species diversity. Oxeye
daisy is a weed of 13 crops in 40 countries, causing particular problems
in pastures. It invades crop land where it decreases crop yield.
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How would I identify it? |
| General Description:
Oxeye daisy is a perennial herb, 1 to 3 feet
tall, with shallow, branched rhizomes and adventitious roots. The entire plant has a disagreeable odor when crushed Leaves:
Flowers:
Stems: Line drawings are taken from 1,000 Weeds of North America, copyright of XID Service, Inc and used with permission. Permission granted by the author. |
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How does it reproduce? |
| Oxeye daisy can spread both vegetatively and by seed. | ||
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Where does it grow? |
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Oxeye daisy is found in
grasslands, overgrazed pastures, waste areas, meadows, railroad
rights-of-way, and |
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What is the distribution in Washington State? |
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Click on map to enlarge. |
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How do I control it? |
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General control methods: Cultural: Because of its shallow root system, oxeye daisy is easily killed by intensive cultivation. Herbicide: Please refer to the PNW Weed Management Handbook, or contact your county noxious weed coordinator. Mechanical: In pastures, mowing as soon as the first flowers open can eliminate seed production. However, mowing may stimulate shoot production and subsequent flowering in areas with adequate growing seasons Biological: None known. |
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Are there plants that may be confused with Oxeye daisy ? |
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There are many plants referred to by common name as a daisy. Be careful of wildflower seed mixes. If you need help with plant identification, contact your county noxious weed coordinator. |
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For more information |
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For more information, download our
Written Findings.
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Last updated July 23, 2008