(Question)
Can I cut back my butterflybush like we do perennials so they don’t get to tall? If so do I just nip out the latest shoot from the main stem? and when do I do it?
(Answer)
Butterfly bushes (Buddleia davidii) are grown for their long panicles of colourful flowers and their ability to attract butterflies and other beneficial insects.
B. davidii forms flowers on new wood and as a result can be pruned late winter early spring.Avoid pruning your butterfly bush in early winter. At this time if water accumulates in the hollow stem it will freeze and cause the stem to split.
The following articule provides detailed information: