Q.When Should I Cut Back A Butterfly Plant
I have a butterfly plant which is extremely tall (15 feet approx). I had very little flowers on it last year. Should I cut it back, if so when. Also it has alot of ivy growing up along the truck of it, should I get rid of that.

Certified GKH Gardening Expert
Yes, remove the ivy and, in late winter or early spring, cut it down to about 1 foot from the ground. It blooms on new growth, so there is no need to keep last year's branches.
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-pruning-how-to-prune-a-butterfly-bush.htm
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-care.htm