It is most suitable for walnut trees to be pruned in winter about 20 days before spring germination (early March in southern Shandong). At this time, pruning walnut trees has less bleeding and the least damage to tree potential.

Walnut trees can also be pruned properly during the growing season (2-3 times a year), but the pruning amount should be controlled at about 20% of the total number of branches in the whole tree.

According to different planting densities, choose the appropriate tree shape (sparse trunk shape, sparse crown shape, delayed open heart shape, natural open heart shape, etc.). ) is selected.

The main points of fruit tree pruning are: thinning straight branches, too dense branches, weak branches, overlapping branches, cross branches, pests and diseases on the back, and improving the illumination in the inner hall of the crown.