When to prune or deadhead butterfly bushes.

Question

Do we need to take faded flowers off of butterfly bushes?

Answer 1

It is a chore to deadhead butterfly bushes, but doing so will enhance the look of the shrub and prevent seeds from forming and dropping, producing weedy volunteers that invade native wetlands. Most bushes are hybrids and the seeds don't come back true. Ask for the sterile variety when purchasing butterfly bush.

Here is more information:
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-care.htm
https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-pruning-how-to-prune-a-butterfly-bush.htm