There are a number of aggressive weeds that have invaded the landscapes of Salt Lake County. Most are non-native plant species that were originally planted for ornamental or agricultural uses. As these plants naturalize into local ecosystems, their seeds move up and down stream corridors carried by water, wind, and wildlife. With a lack of native controls (insects, disease, etc.), the most successful invasive weeds will ultimately displace native plants to become the dominant vegetation. This has serious impacts on ecosystem health by decreasing biodiversity and ultimately contributing to increased erosion potential.
Many invasives are listed as noxious weeds, a legal designation by federal, state, or county governments for plants that are considered injurious to public health, agriculture, recreation, wildlife, or property. Many of the worst invaders are listed as noxious, but not all. Regardless of their classification, please don’t plant or maintain invasive plants. Get to know their identifying features and eradicate them from your landscape!
Learn more about weed identification and control methods from the
Salt Lake County Weed Control Program.
Hoary Cress, Whitetop
Photo Credits: "Saltcedar", Steve Dewey; "Bittersweet nightshade", Bruce A. Conti; "Garlic Mustard" and "Purple Loosestrife", King County Weed Control; "Phragmites" and "Hoary Cress", Wikimedia Commons