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Winter Injury to Boxwood in Iowa

Typical signs of freezing injury are a blackened/brownish discoloration or bleaching of plant tissue. If the freezing injury kills a significant number of buds or cambial tissue, the plant may die or suffer so much crown die-back that it becomes unusable. If freezing injury is limited to flower buds and shoot dieback, it may require corrective pruning and time to allow the plant to grow out of the damage.