Often people are worried as to when they should cut their hedge, as if cut at the wrong time, you can leave your plant with pruning wounds which can stunt the growth and make the plant vulnerable to infection.
With that being said, we're here to tell you exactly when you should trim your hedge to avoid these problems...
Any formative pruning should be carried out during winter or early spring, when the plant is dormant. This is to ensure new growth will not be susceptible to harsh conditions.
However, in terms of general maintenance pruning, you may need to do this 2-3 times a year to keep it looking neat. Generally, maintenance trimming is carried out during spring and summer, so the plant is able to recover itself with new growth before being hit with harsh winter conditions.