Survey and Treatment Projects

Oregon participates in a federal program to monitor, and suppress when necessary, grasshoppers and Mormon crickets. Even though not all grasshopper species are pests, outbreaks can vary in their magnitude and geographic expanse. Early intervention can dampen the severity of an outbreak cycle.

Grasshopper and Mormo​n Cricket​ Survey

To assist in predicting where potential grasshopper outbreaks may occur, the Animal and Plant Health Inspection Service (APHIS) and Oregon Department of Agriculture (ODA) conduct annual surveys of grasshopper populations in Oregon.​​ Findings are reported each week through the summer. To view previous reports or if you have questions please contact Paul Blom​.

Final grasshopper and Mormon cricket program report

Final 2019 report

Oregon ​​Grasshopper and Mormon Cricket Environmental Assessment (EA)

Grasshopper and Mormon cricket EA

This environmental assessment (EA) analyzes potential environmental consequences of the proposed suppression programs and its alternatives. Oregon EA for Grasshopper and Mormon Crickets

Maps of the affected area

Grasshopper and Mormon cricket suppression activity and infestation maps

Maps of the affected environment (EA: Appendix 1)

​Treatment guidelines

Rangeland grasshopper and Mormon cricket suppression program treatment guidelines

Treatment Guidelines

Finding of no significant impact (FONSI)

Rangeland grasshopper and Mormon cricket suppression program FONSI


Request for public input

Please submit comments to: Colin Park, Plant Health Safeguarding Specialist (representing Oregon State Plant Health Director) | Mailing Address: USDA-APHIS-PPQ 6135 NE 80th Ave, Suite A-5 Portland, OR 97218 | 503-730-7622 | Request for Public Input For the Grasshopper and Mormon Cricket Suppression Program in Oregon



Paul Blom
Entomologist/Eastern Oregon Field Office Survey Coordinator; Grasshopper Program
Insect Pest Prevention & Management
Phone: 503-508-1253
Insect Pest Prevention & Management
Phone: 503-986-4636