My locust tree is losing its leaves in site of treatment with Bayer tree and shrub food /insecticide. Leaves start dropping in early May.
Certified GKH Gardening Expert
What insect are you spraying for - the honeylocust spider mite? Heavy infestations of spider mites cause early leaf drop, so it may not necessarily be the insecticide, but the insect you are spraying for.
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