Other time variants for cutting boxwood and hedges
For cutting boxwood trees or hedges, timewise there are two different variants :
Cut back at the end of May, beginning of June. This way you can use the second growth phase which usually occurs around end of June for a more dense growth of the hedge or boxwood tree. You may then cut back again till mid or end of July.
Cut back at mid or end of July. This way you only need to cut back your hedge or boxwood plants once a year. However, if you want to encourage your boxwood or hedges to grow more dense, you should cut back twice a year using cutting variant 1.