Noxious Weed defined:
A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is injurious to agricultural or horticultural crops, natural habitats or ecosystems, or humans or livestock. Most noxious weeds have been introduced into an ecosystem by ignorance, mismanagement, or accident. Some noxious weeds are native. Typically they are plants that grow aggressively, multiply quickly without natural controls (native herbivores, soil chemistry, etc.), and display adverse effects through contact or ingestion. Noxious weeds are a large problem in many parts of the world, greatly affecting areas of agriculture, forest management, nature reserves, parks and other open space.
Many noxious weeds have come to new regions and countries through contaminated shipments of feed and crop seeds or were intentionally introduced as ornamental plants for horticultural use.
https://en.wikipedia.org/wiki/Noxious_weed
Report a weed sighting
We use the EDDMapS reporting system to help track noxious weeds.
- Free to use
- Easy to get started
- Used by professionals and citizen scientists
Weed class designations
Understand Utah's noxious weed classification system
Class 1A Early Detection Rapid Response
Plants not known to be in Utah, but thought to be present in neighboring states. If found in the state, swift eradication of any plants in this category is a very high priority.
Class 1B Early Detection
Plants that occur in Utah at very low levels. It is a high priority to eradicate all known populations, and prevent new ones.
Class 2 Control
Plants that have a reasonable distribution in Utah, but do not occur everywhere. These should be given a high priority for control.
Class 3 Contain
Plants widely distributed in Utah. The current populations of these plants should be contained to halt their spread. These plants should not enter commercial channels.
Class 4 Prohibited
Plants that are present in Utah, appear to be arriving in nursery stock/seed, and are being sold as ornamentals. This is now illegal.
Utah's noxious weeds
