Answer: The blue potato bush is notorious for sending out suckers which need to be pruned back if you want to keep the tree shape. If left unpruned it can grow to a bush of twelve feet or higher and perhaps just as wide. Prune the wayward branches back in spring and whenever needed to keep it tidy in throughout the summer and fall. Pruning does stimulate growth and blooms. It is a very forgiving plant and you probably cannot ruin it, even with severe pruning. So prune it back now and expect lots of new growth and flowers later in the season. Enjoy!
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