When does elm bark every year?

Elms are peeled every year at the turn of summer and autumn. According to relevant data, the normally growing elm will shed its skin at the turn of summer and autumn every year. This is the old skin on the bark surface, which can naturally fall off in the next spring. This situation is normal. It is suggested to combine pruning in autumn and winter to break the curly molting, so as not to become a place for pests to lay eggs in winter, and it is beneficial to the growth of main epidermal cells after molting.