Smaller Milan, keep the height of 15 cm from small pruning, and promote the development of new branches for modeling. Pruning can only be done after the flowers wither, and it is best not to prune them when it is hot in summer.
Old Milan cut off weak branches, new branches can be shortened and more side branches can be promoted. When pruning daily, you should pick the heart, keep the tree beautiful, and topdressing after pruning.
In the north, pruning can only be done every other year, not every year. Pay attention to this.