Answer: These shrubs have a naturally tidy and pyramidal shape when grown in the open in full sun, so no pruning should really be necessary in the long run. Early growth on young plants may show a central leader but they will fill in, in time. They do grow slowly, so I would plan on waiting three to five years or more for that type of height. To encourage premium growth, make sure they receive adequate water from the hose or the sky all season long so that the soil is evenly moist yet not soggy up until the ground freezes each winter. Winter protection from wind can also help them stay vigorous. These are good quality plants and worth the wait.
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