A neat and tidy hedge is a joy to see, but it does need work to achieve that smart finish. When choosing the best time for hedge trimming, start by thinking about what you want to achieve.
Formative pruning is when your hedge is still young, and you want to make sure it grows into the correct shape. Maintenance trimming is done on adult hedges to keep them from getting messy, and this trimming is usually done once a year for informal hedges, and twice or thrice a year for formal hedges.
Both formative hedge trimming and regular maintenance hedge trimming work best at particular times of year. Whether your hedge is deciduous (those that shed their leaves annually) or evergreen (those that stay green all year round) will also
determine what time of year you should get your hedge trimmed.