deadheading Buddleia

Question

How do I do this? What time of year?

Answer 1

To deadhead Buddleja, simply use sharp, clean clippers to cut off each flowering head after its flowers have turned brown. Cut down to the branch point where two other flower heads branch off.

For pruning the entire bush, see this article:

https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-pruning-how-to-prune-a-butterfly-bush.htm