Forest & Grassland Health

Line Drawing of Bark Beetle by Tom ColemanThe Forest Health staff of the Southwestern Region provides assistance and expertise to Federal, State, and Tribal land managers in Arizona and New Mexico concerning forest health conditions and issues. We provide advice and support for projects to help prevent or suppress insect and disease outbreaks. Annually, we conduct survey flights to monitor forest health conditions and provide land managers with information on current issues, with an emphasis on detecting insect activity. Information on current activity and our program is provided through the links below.


  • Our 2019 Conditions Report is available (PDF, 9.0 mb).
    Graphic of cover of forest health report
  • Oystershell scale infestations on aspen are becoming more prevalent in northern and central Arizona.
    • Read the June 2020 pest alert (PDF) produced jointly with the Arizona Department of Forestry and Fire Management.
    • Read our March 2020 news release (PDF) with NAU and the Arizona Elk Society on oystershell scale affects in Arizona.
  • See our Story Map highlighting the aerial survey program in 2019.
  • Visit our National Mapping & Reporting Applications site.


Tree Risk Management Program

Information for land managers regarding assistance our staff can provide on tree risk identification and management.


Current Highlights

Janet's looper
  • Insect activity
  • Disease activity
  • Projects

Bark Beetles

Close up image of pinyon ips bark beetle
  • Bark beetle biology
  • History
  • FAQs


Insect & Disease Survey

Aerial view of Douglas-fir trees infected by Douglas-fir beetle
  • Survey information
  • Maps
  • Data

Weed Field Guides

Cover Image of Weed Field Guides
  • New series of 33 field guides
  • 40+ species covered
  • Includes management guidelines

View All Spotlights

Key Contacts

  • Joel McMillin
    Forest Health AZ Zone Leader
    (928) 556-2073
  • Andy Graves
    Forest Health NM Zone Leader
    (505) 842-3287

  • Allen White
    R3 Pesticide / Invasive Species Specialist
    (505) 842-3280
Thumbnail image of online draft aerial survey data map viewer

Forest Health 2020 Draft Survey Data