Answer: Dawn redwoods are quite often sheared into hedge shapes so pruning will allow you to control the shape. Prune these as you would deciduous and broad-leaved evergreen trees. New growth will sprout from below the pruning cuts as long as the remaining branch bears some foliage; in general, no new growth will develop from bare branches. It's best to prune random-branching conifers right before new growth begins in spring.
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