Grubs, What Spring ground temperatures do they become active..

Asked March 16, 2016, 12:28 PM EDT

What temperatures and soil depths do Grubs become active and start feeding, so i can put down Granular trichlorfon 9.3% and then put down grass seed

Wayne County Michigan

1 Response

Here is a fact sheet on Japanese beetles which discusses the lifecycle and treatment windows. It gives treatment windows by month not soil temperatures.
http://msue.anr.msu.edu/resources/japanese-beetle

The MSU Turf grass Team maintains GDD tracker to predict turf pest and pesticide applications.http://gddtracker.net/?model=11&offset=0