Not quite a nesting hedge, Wisteria should be trimmed twice a year, the first in summer as a remedial prune and a winter cut for shaping.
Leylandii should ideally be cut in spring before the nesting season. We don’t suggest cutting the hedge in winter or late autumn as it can shock the tree, sometimes even causing death.
Beech hedges are best timed in late August/early September, but take care to identify any nesting birds. Late summer is ideal because there’ll be enough growth to give you a screen in the winter months.
Cutting laurel hedges is best performed in spring when new shoots quickly form and cover tatty edges left by a hedgestrimmer.
You should trim your privet hedge at least twice a year, if the hedge needs cutting back, then we suggest doing this in April or earlier (before nesting birds arrive).