white/black caterpillars on my butterfly bush.. What to spray to get rid of them

Question

I’ve found 5 of these caterpillars on my butterfly bush. I heard put flour on the bush after removing worms. What kind of spray can I use??

Answer 1

My best suggestion is to take a sample of this guy to your local extension service or garden center to learn what kind of caterpillars you're dealing with and how to eliminate them. This article has a remedy that may help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/prevent-caterpillars.htm