Answer: Japanese euonymus is often used as a hedging plant and the size can be controlled with annual pruning. Plant your shrubs now and then just make a habit of pruning them every spring, just as new growth is beginning. If they appear to be growing too fast, you can prune them back a second time in mid-summer. Don't wait until the plants reach the 5' you desire and then try to keep them that size. Instead, prune each year and they will remain full and bushy rather than develop bare stems towards the bottom of the plant. Euonymus is considered a moderate grower and you can expect 6-12" of new growth each year. When you read a mature size on a plant tag it generally means it will reach that size in about 10 years, if left unpruned. Hope this answers all your questions.
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