The best and easiest way to trim your conifer hedge is by using a hedge trimmer- especially if you have quite a length of hedging to deal with.
Quick-growing hedges, like Leylandii, will need up to 3 trims per growing season.
Slower growing hedges can get away with one trim per year, depending on how neat you like your garden to look. You must ensure you inspect your hedge for any nesting birds etc., before you begin trimming- you don't want to damage any nests or birds!
How to prune your conifer hedge
- Push some bamboo canes into the hedge to mark the top. Tie some string between the canes to mark a straight edge, and ensure it's pulled tight.
- Begin by trimming the top of the hedge horizontally. Use the string as a guide and be sure to wear protective gloves/goggles.
- Once you've done the top, clip the sides, holding the trimmer vertically and making long sweeping strokes. This will leave a lovely, even finish- just what you're looking for!
- Finish off by removing the canes and string, before then using the trimmer to tidy up edges at the top, and any other little uneven spots you can see.
- And that's it! If your hedge is fast-growing, you can trim again after 8 weeks.