Can I spray my lilac bushes with Fertilome 'borer, bagworm, tent caterpillar and leafminer spray' besides cutting out the affected part of the bush?
Borer in Lilac Bush
Certified GKH Gardening Expert
It should be ok as long as you follow the instructions carefully. Here is more information that may help: https://www.gardeningknowhow.com/problems/pests/tent-worms-tent-caterpillar-home-remedy.htm