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How to trim oak trees
Prune young oaks in mid to late winter, or january through march.
Trimming your tree during the winter months allows it to care for its wounds in spring when it will recover more quickly.
Limit trimming only to dead or broken branches on newly planted trees.
Two to three years after planting you can begin developmental trimming to shape the tree. Learn the growth habits of your particular type of oak tree Prepare your tools for trimming.