Weed Control Division

The Weed Department sprays roads for weed infestations in Millard County.

What is a weed?

Most simply stated, a weed is a plant out of place. It is the name that humans have placed on “undesirable” plants that interfere with our land management objectives. A plant may be a weed in one place but an acceptable plant in another (example: St. Johnswort & Purple Loosestrife). Noxious weeds are weeds that, by law, must be controlled. They are usually the most invasive and aggressive of the weeds. They usually spread easily, reproduce quickly and in large quantities, and reduce populations of desirable plants. The federal and state Departments of Agriculture decide which plants to list as noxious.

Most Common Weeds

Click on the weed names to view photos and descriptions:

Canada Thistle
Dalmation Toadflax
Diffuse Knapweed
Dyers Woad
Field Bindweed
Jointed Goat Grass
Leafy Spurge
Medusa Head
Musk Thistle
Purple Loosestrife
Russian Knapweed
Scotch Thistle
Spotted Knapweed
Squarrose Knapweed
Tall White Top
White Top
Yellow Star Thistle
Yellow Toadflax

More Information

USDA Noxious Plants website

Weed Control Standards

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