County's top 10 invasive weeds

June 2, 2011
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Diffuse knapweed: This flower with purple or white petals colonizes everything in its way. It is being contained to roadsides and industrial areas near Everett. If it's found in your garden, mowing it is not recommended. The weeds must be pulled early before they go to seed. (Center for Invasive Species and Ecosystem Health)

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