Don't mind transplanting in winter. During the dormant period of walnut branches, because of pruning, the wounds caused by the branches will bleed, which will lead to a large loss of nutrients in the tree, leading to the weakness of the tree and the dead branches. In order to prevent walnut trees from bleeding due to pruning, we should master the pruning period and prune them in time. In spring, when the branches and leaves of walnut trees sprout and grow leaves, they can be pruned at this time. Autumn is also a good time to prune the trees after harvesting walnuts and before defoliation. At present, producers who cultivate walnut trees should seize the appropriate pruning period and prune walnut trees.