Now my Deutzia has finished flowering I need advice on the pruning. I have cut back branches that flowered but there are four 2ft long stems that had no flowers on that tower above the rest of the bush. Should I cut these back as well, or are they going to have flowers on next year? They have larger leaves than the rest of the shrub and look like suckers, but I know they are not because they are growing from the same stems that had the flowers. I can't find anything in books, so I hope someone out there knows what to do. Fingers crossed.