The Dawson County Weed District was organized in November 1946 at the time the Nebraska Noxious Weed Law was only inforced by counties who wanted to control noxious weeds. In November 1965, the weed law, as we now know it, was voted into being by the legislature, Weed Districts were disbanded and each county was mandated to form a Weed Control Athority and inforce the Nebraska Noxious Weed Control Act.

In 1873 Nebraska designated its first noxious weed Canada Thistle today 12 weeds are designated as noxious they are: Musk Thistle, Plumeless Thistle, Canada Thistle, Leafy Spurge, Knapweed (spotted and diffuse), Purple Loosestrife, Saltcedar, Phragmites, Knotweed (Japanese and Giant) and Sericea Lespedeza