Answer: You can keep a mimosa at a certain height and width with selective pruning. Don't let it get away from you - it's difficult to effective reduce the height of a tree once it becomes overgrown. I have a maple tree that I've kept to 4' in height (2' in width) for the last 15 years. I simply prune it back in the winter and in the spring when it begins to leaf out, it does so on the existing branches. During the summer it attempts to grow additional branches, but I trim them out every 3-4 weeks. Best wishes with your mimosa.
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