BLM Environmental Impact Statement Approves New Herbicides

Bureau of Land Management (BLM) Environmental Impact Statement (EIS) approves new herbicides including aminopyralid products (such as Milestone & Opensight) and fluroxypyr products (Vista XRT & Surmount)

On September 9, 2016 the BLM issued the Record of Decision (ROD) for the Final Programmatic Environmental Impact Statement approving the use of three new herbicides on BLM lands (Vegetation Treatments Using Aminopyralid, Fluroxypyr, and Rimsulfuron on Bureau of Land Management Lands in 17 Western States)

  • These three additional active ingredients provide the BLM with a more effective set of tools to address wildfire protection and habitat restoration, and to reduce the threat of noxious weeds, invasive species, and hazardous fuels on BLM managed public lands.
  • Currently all other federal agencies (USFS, US F&W, BPA) and many state agencies have approved the use of these herbicides on their managed lands.
  • Invasive plant management professionals should contact their local BLM Districts to check on the status of environmental documents necessary to allow for applications of Milestone, Opensight, Vista XRT or Surmount on BLM lands in your area.

Milestone and Opensight:

Target weeds

  • Russian knapweed, spotted knapweed, diffuse knapweed, squarrose knapweed, Canada thistle, Scotch thistle, bull thistle, musk thistle, whitetop, houndstongue, common mullein, broom snakeweed, rush skeletonweed, St. Johnswort and more (see complete list of weeds at
  • Medusahead and cheatgrass (downy brome) suppression or control depending on timing and site conditions


  • Not Restricted Use herbicides
  • Allows for the use of fewer pounds of active ingredient per acre on weeds such as theknapweeds (for example, Russian and spotted) and all species of thistles
  • Excellent for use in habitat restoration due to outstanding tolerance of over 26 native forb species critical to pollinators, along with desirable grass tolerance (see information on forb tolerance at )
  • Excellent toxicology and environmental profile

Vista XRT:

Target weeds

  • Kochia, mallow, and curly dock


  • Not a Restricted Use herbicide
  • Control of kochia resistant to herbicides like glyphosate and Dicamba
  • Good alternatives for habitat restoration as it has good tolerance towards young grass seedlings
  • Excellent toxicology and environmental profile, one of the few herbicides that has no active soil residue


Target Weeds

  • Prickly pear cactus and cholla

Thank you for your support of invasive plant management. Please contact your local BLM office for more information.