Printed from: https://www.conservationhandbooks.com/hedging/trimming/the-effects-of-trimming/
Hedges managed by trimming from the time they are planted and which never have to suffer heavy top-cutting can stay healthy and vigorous for many years. The method of trimming to an A shape described on page 57 , encourages the development of a hedge with a wide base from which vigorous shoots can grow....