Hedges can be specially shaped, not just to create pleasing forms as in topiary, but also to prevent damage from heavy snowfalls and to create effective windbreaks

Tapered Hedges

It is always advisable to shape a hedge so that it is one-third wider at the base than the top. Hedges with straight sides or those that taper towards the ground often become bare and twiggy at the base, as the foliage is kept in constant shade by the upper leaves and stems. Creating a hedge that is wider at the base ensures that plenty of sunlight can reach all parts of the plant.

A tapered hedge is also less vulnerable to strong winds and snow. High winds or gales will be deflected by its sloping sides, reducing the damage to the hedging plants, and snow will quickly fall away down the sides. The addition of a gently curved, pointed top or a flat-topped 'A' shape will prevent snow and ice from settling and causing damage to branches.

Cutting Guidelines

A level top can be created by using a garden line stretched between posts to act as a guideline. You can also create a plywood template of the shape you want your hedge to be, and use this as a guide when cutting. Move the template along the hedge as you cut, making sure that you carefully follow the line of the template. Always work upwards from the bottom of the hedge so that clippings can fall freely to the ground and do not get entangled with un-pruned stems. If using a powered hedge trimmer, make sure that you wear gloves and goggles, and use a residual current device (RCD) when using an electric trimmer.

Maintenance

Once the hedge has been shaped, you will simply need to clip in subsequent seasons to maintain its form.