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I saw your report on trimming and shaping shrubs and wondered when was the best time. No, it is not too late to trim your boxwoods. I prune my boxwood hedge twice a year, once in the very early spring and again in late summer. Believe it or not, the hedge thrives from this kind of treatment. Boxwoods are a broad-leafed evergreen â just like hollies, azaleas and rhododendrons.
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.oxwood 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.