At least a week before the first insects are expected to emerge (early June), place yellow monitoring traps baited with ammonium acetate in the the top third of bushes without foliage touching them. If you monitor the traps and detect flies, only then should you spray an insecticide. Speak to your local cooperative extension about approved insecticides.
At least a week before the first insects are expected to emerge (early June), place yellow monitoring traps baited with ammonium acetate in the the top third of bushes without foliage touching them. If you monitor the traps and detect flies, only then should you spray an insecticide. Speak to your local cooperative extension about approved insecticides.