Suppression and Eradication Programs

Japanese beetle

Spring 2018 Japanese beetle eradication project in Cedar Mill and nearby neighborhoods. 

***If the deadline on your notice has passed, you can still send it your forms. Please fill out the form online or mail it back as soon as possible***​

If you received a notification about treatment, it is critical that you fill out the online form as soon as possible: Or, return the consent form in the mail. 

If you have misplaced your PIN (located on the address section of the notification letter or materials), please call our office at 1-800-525-0137. 

Our proposed response plan for Japanese beetle eradication for 2018 is available for viewing the resources section below. The Japanese beetle eradication project is a proposed five-year project and expected to continue through 2021, but the areas receiving treatment are likely to change. 

Yard Debris quarantine

The Oregon Department of Agriculture is asking all residents, landscapers, and waste managers that work in the yard debris quarantine area to follow the steps below in order to comply with the quarantine to prevent the spread of both Japanese beetle adults and larvae. Residential yard debris including grass clippings, plants with soil, and sod must be contained and delivered to a proper location. Compost and transfer facilities ARE NOT ALLOWED to accept yard debris from the quarantine area in order to prevent the spread of Japanese beetle. For a map of the quarantine boundary, please see "2018 Japanese Beetle Treatment and Quarantine Map" below under "Japanese beetle resources". The quarantine area is the area outlined in ORANGE on the map. 

If possible, keep yard debris at the property or use a standard curbside yard debris bin. If yard debris must be removed from the property, bag and cover the load and take it directly to:
Northwest Landscape Services
1800 NW Cornelius Pass Rd, Hillsboro, OR. (503) 486-5154. 

Fall and Winter Hours of Operation: Monday - Friday: 7am to 4:30pm; Saturday by appointment; Closed Sundays and Holidays (this yard debris drop off site is ONLY available to quarantine residents and their landscapers).

2017 Japanese beetle ​detections

In and around the 2017 treatment area, the total catch was an unprecedented 23,000 beetles. Roughly 97% of the beetles detected came from traps within the treatment area, including approximately 20% from a single trap. This means that the number of beetles in 2018 should be greatly reduced, as the spring treatment targeted the offspring of the 2017 adults (the beetles captured this summer). 

Small populations of Japanese beetles were also detected at Portland International Airport (PDX), Swan Island in Portland, and Oakland, OR. These detections are assumed to be unrelated to the population near Cedar Mill. 

Japanese beetle resources​

2018 Japanese Beetle Eradication Response Plan

2018 Response Plan for Japanese Beetle Eradication

2018 Japanese Beetle Treatment and Quarantine Map

ArcGIS Online map

Acelepryn G® Frequently Asked Questions

Acelepryn G® pesticide product information from Oregon Health Authority. Acelepryn G® FAQs

Granular Insecticide for JB

Acelepryn® G insecticide label

Help Save the City of Roses from Japanese Beetle

Information about the Japanese beetle, its current status in Portland, the proposed treatment, and resources.

Japanese Beetle Economic Risk Assessment

Japanese Beetle Economic Risk Assessment

Japanese Beetle Frequently Asked Questions

Frequently asked questions about Japanese Beetle

Japanese Beetle in Oregon

Yearly summary report for Oregon's Japanese beetle trapping and eradication program 2017 Summary Report

Japanese Beetle in Oregon Environmental Assessment (2016)

JB Environmental Assessment

Japanese Beetle Look-Alikes Guide

A visual guide to Japanese beetle look-alikes

Japanese Beetle Yard Debris Quarantine Flyer (2018)

JB Yard Debris Quarantine Flyer (2018)

Japanese Beetle: A Major Pest of Plants

Brochure about Japanese Beetle

Japanese Beetle: Threat and Opportunity in Oregon

Japanese Beetle Threat and Opportunity pdf document

Light brown app​​le moth

Light brown apple moth (LBAM) detections

The Oregon Department of Agriculture (ODA) caught 1 light brown apple moth in 2010, 2 in 2015, and 3 in 2016. All moths were caught within a one square mile area south of Independence in Polk County. Catching moths in 2015 and then again in 2016 in the same general area indicated the presence of a breeding population of LBAM. 

2017 LBAM eradication project south of Independence, Polk County

The eradication project included:

  • Adult LBAM treatments: Two applications of SPLAT, a mating disruption pheromone, applied by airplane
  • Larval LBAM treatments: Three applications of Bacillus thuriengensis kurstaki (Btk), a biological pesticide​, applied by airplane
  • Delimitation traps placed in the vicinity of the treatment area and detection traps placed statewide.​​
All aerial treatments have been completed for 2017. Delimitation trapping will be completed in late October.

​​​Gypsy moth

The Oregon Department of Agriculture, in conjunction with USDA and other federal and state agencies, conducted an eradication program in the North and Northwest Portland area in 2016. Approximately 7,000 acres were treated in April and May with an aerial application of a biological pesticide Bacillus thuringiensis kurstaki to eradicate the Asian and European gypsy moth infestation. The treatment phase was completed in 2016, and we are currently in the second year of the trapping detection phase. 

ODA has completed the trapping program for the 2017 season. We did not detect any Asian gypsy moths in the Portland area, indicating the treatment was a success. 

ODA detected a total of 11 European gypsy moths in Oregon in 2017, in Benton, Multnomah, Lane and Josephine counties. Detection traps will be placed accordingly throughout the state starting in spring 2018. No eradication is proposed. 


Grasshopper suppression

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 survey report

The 2015 Oregon grasshopper survey season showed a continuing increase in the grasshopper population which had been declined through 2013 from a high in 2011. An estimated 2.4 million acres across eastern Oregon were found to be economically infested. ODA and USDA-APHIS did not participate in any control efforts during 2015, though from various informal reports we believe there were several programs for treating privately held land.​​

Grasshopper resources​​​​​​​​​​

Grasshopper & Mormon Cricket information-USDA


Grasshopper Report

Grasshopper Report Summary (full) Document

Grasshopper Report Summary

Grasshopper Report Summary (brief) Document



Gypsy Moth and Japanese Beetle

Jessica Rendon
Entomologist/ JB Response Coordinator
Insect Pest Prevention & Management
Phone: ‭503-871-6133‬
Chris Hedstrom
Insect Pest Prevention & Management
Phone: 503-986-4654
Clinton Burfitt
Program Manager
Insect Pest Prevention & Management
Phone: 503-986-4663


Paul Blom
Insect Pest Prevention & Management
Phone: 503-508-1253
Insect Pest Prevention & Management
Phone: 503-986-4636