Who of you out there has a fast growing Leylandii hedge (golden or green)? Maybe you call it by its Latin name x Cupressocyparis Leylandii or maybe you call it that damned high maintenance, sunlight blocking hedging. Please try not to be so hard on this conifer, as evergreen hedges with thick foliage such as Leylandii, can filter out up to 30% of atmospheric pollution. Now, I have called it a hedge but maybe I should have called it a line of trees, because your Leylandii is in fact a tree not a hedging shrub. You will have realised this, if you have been fighting a losing battle to keep a Leylandii hedge to a height that will still allow sunlight to enter your property.
When to prune, side and top
This crazy growth conifer tree is always trying to get to its ultimate height of 20 metres (60 ft) and ultimate spread of 5 metres (15 ft). So for most people this means pruning their hedge religiously each year, missing a years pruning will result in excessive labour at dangerous height the following year. Anytime during the month of May is a good time to trim and tidy up a formal Leylandii hedge. Many people choose to trim in late autumn when giving the garden a late...