After a careful review of project information, current mapping, and regional noxious weed lists, the Bureau of Indian Affairs Navajo Region has developed the list below of its priority noxious weed species. Projects focused on removing and managing the weeds listed below will be prioritized as part of the BIA’s Noxious Weed Program. The information below is provided as a general reference. Anyone interested in managing and controlling noxious weeds should contact their local BIA Navajo Agency Office.
Current Noxious Weed Projects
Use the links below to learn more about new or on-going noxious weed projects the BIA is performing on the Navajo Nation. Contact your local BIA Noxious Weed Coordinator to report new populations or inquire about how you can help fight weeds and restore native plants.
- BIA Noxious Weed Mapping and Monitoring (Link to BIA GIS mapping, Pending)
- BIA Navajo Agency Contact Information
- Quick Reference Noxious Weed Treatment Poster
CATEGORY A WEEDS
Category A noxious weeds are less common on the Navajo Nation but could cause serious ecological impacts if unmanaged. Some species occur off Navajo trust and allotted land, while others are in isolated populations. Priority for these species will be eradication of known populations and/or prevention. Click on the photos to learn more about how to identify these species and recommended management methods.
CATEGORY B WEEDS
Category B weeds are weed with substantial, but isolated populations on the Navajo Nation. These weeds have caused harm to wildlife, livestock, humans, and property. Management goals for these species focus on containing existing populations to prevent their introduction to unaffected areas and to eradicate them over the long-term. Because many are located in specific areas, management should focus on treatments that occur over several years.
CATEGORY C WEEDS
Noxious weeds listed in Category C are widespread and difficult to contain. These species often occur in many areas on the Navajo Nation or are known to occur but the actual size and scope of their populations is unclear or unknown. This list includes several annual brome grasses that are known to impact rangelands and farmlands throughout the southwest Region of the United States. The management goal for these weeds are to locally contain the populations to prevent further spread and to monitor for new infestations.