Not Pruning a Butterfly Bush
I was just curious what would happen if I did not prune my butterfly bushes. They are pretty big now and I hate, every year, to have all that cut brush, branches, etc.that I have to deal with.
Certified GKH Gardening Expert
Nothing bad happens if you do not prune them. They just get bigger, really. Many people prune to keep them smaller and in a more "formal" shape, but if you do not prune, they simply get bigger and have a more wild shape.