Tree-Age application timing.

Asked September 25, 2014, 4:07 PM EDT

Is application of Tree-Age (Emamectin benzoate) to ash trees for the prevention of emerald ash borer damage effective during the months of September and October?

St. Clair County Michigan trees and shrubs emerald ash borer

1 Response


Timing for using Emamectin benzoate is mid-April through mid-May. It takes 2-4 weeks for the chemical to move up through the tree.

The only chemical recommended for fall use is Imidacloprid as a soil drench or injection.

Here are a couple research-based articles with charts showing what chemicals can be used for EAB management and when they should be applied:

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