Boxwood can be pruned easily and has the ability to grow from old wood. To maintain trimmed forms and hedges you need to prune them twice a year. The first time should be done around late May or mid-June, after the first growth spurt. You can prune for a second time in September or October so the plants will look tight when winter comes. It is best to do it when the weather is cloudy to reduce the chance of burning the leaves. By cutting them you damage part of the leaves and these will turn brown. They will fall off after a couple of weeks when the plant is shooting up again.

Some types only need to be trimmed once a year. This will save you labour and pruning waste. If you only do it once a year, you should do it in August.

You should prune boxwood shapes with pruning shears for hedges. Choose shears of a good quality so pruning stays enjoyable. It is also important to keep the blades very sharp.

TIP: If you prune in the rain your blades stay free of scaling, making it easier to cut. Cleaning the blades regularly with a wet sponge has the same effect and you can remain dry...

Hedges and solid surfaces should be pruned with an electrical or motorised pruning shears. It is easier to keep a straight line with these. If the blades are kept sharp, the damage to the leaves is less than expected. These appliances also allow you to work a lot faster than handheld shears.

The so-called boxwood-scissors or shears that are for sale are only suitable for trimming shapes. It is better to get a decent pair of pruning shears for hedges. These are also available in smaller sizes to prune smaller shapes.
A drastic rejuvenation of an old hedge or trimmed shape is best carried out during winter. That way the plant can sprout early in the spring. It could take some time for the plant to recover fully. In this case, it is preferable to use extra fertilizer.