| When and how far do you prune your butterfly bush for winter? |
| In a word, don't prune it in the fall. Butterfly bush should be pruned in the spring to shape and encourage new growth since it blooms on new wood of the season. When pruning, first off, there may be some die back or winter kill after the winter season and that should be removed. In some years this could mean cutting it nearly to the ground. In other milder years this might be just a few branch tips. Next, you can prune for shapeliness and to encourage bushiness or branching; you can also prune to try to limit its overall size. The plant has a naturally gangly shape and can grow very large in one season, so some gardeners will opt to prune more than others. Finally, each cut will force the plant to branch and each branch tip will bloom, so you can also influence the number of blooms. If there are fewer blooms then each will be larger, with more blooms they will individually be smaller. Some gardeners will deadhead the flowers as they fade to help the bush bloom over a longer period. |
