Japanese Beetles Have Started To Emerge

Posted on June 27, 2023 by Cassie Russell

Back by not so popular demand, Japanese Beetle (Popillia japonica) adults are starting to emerge and take flight in southern Ontario! We caught our first adults in pheromone traps on June 23rd in Guelph.

Look for these shiny green and copper beetles feeding on grape leaves, roses and many other trees and shrubs.  Where possible, homeowners can knock adults into a bucket of soapy water (to smother them).  Several insecticides are registered for the adults in the nursery, including BeetleGONE and Imidan.

Preventative applications of Intercept and Acelepryn are registered for white grubs (e.g. European chafer, June beetle, and/or Japanese beetle) in nursery and greenhouse production and the application period begins now.

If you’re looking for more direction on what can be applied (and when) for JB control for phytosanitary measures, below is a link to the JB control infographic and article from a few months ago:

Japanese Beetle Control 2023: Changes to Allowable Pesticides and Updates to Infographic

It will soon be that time of year again, when Japanese beetle (JB) adults begin to fly! However, there have been some changes to acceptable control products for JB growers need to be aware of in order to be in compliance with certification programs for this pest.

This post highlights changes to treatments and also provides an updated infographic for JB control for those exporting to non-JB areas (both domestically and to the United States).

Continue reading “Japanese Beetle Control 2023: Changes to Allowable Pesticides and Updates to Infographic”

Japanese Beetle Control: 2021 Considerations

japanese beetle_daveIt will soon be that time of year again, when Japanese beetle adults begin to fly!

However, the cooler spring means pupation may take longer. So what does that mean for timing of control products?

This post answers those questions and provides current infographics for JB control for those exporting to non-JB areas.

Continue reading “Japanese Beetle Control: 2021 Considerations”

Updates 2020: Japanese Beetle Control

japanese beetle_daveIt will soon be that time of year again, when Japanese beetle adults begin to fly. However, the cooler spring means pupation may take longer. So what does that mean for timing of control products?

This post answers those questions and provides updated infographics for JB control for those exporting to non-JB areas.

Continue reading “Updates 2020: Japanese Beetle Control”

Japanese beetles are in flight! WHAT and WHEN to spray.

Image result for japanese beetle
Japanese beetle (Popillia japonica) adults were spotted flying on June 29 (2018) in Ontario!

The Japanese beetle season is upon us once again!  Adults were spotted this week in Southern Ontario.

Shipping outside Ontario or need to meet the requirements of the JB module for the Greenhouse Certification Program? Not sure what’s required?

This post contains a treatment “decision tree” and a JB product “cheat sheet” to help growers of greenhouse ornamentals.

Continue reading “Japanese beetles are in flight! WHAT and WHEN to spray.”