A short, white picket fence may look charming as a garden fence but is not the most effective method for fencing out pests. Keeping pest animals out of the garden effectively often means building fences to heights that pests cannot climb or leap over.
Deer, one of the most common flower and vegetable garden pests, can jump to maximum heights of 2.4 m (8 feet). In areas with lots of hills and mountains, gardeners may build fences to heights of 12 feet or more on sloped land to prevent deer from jumping over the fence from higher ground. However, not all garden pests require tall fences, as rabbit, hedgehogs, mice and other small pests can be managed with fences at maximum heights of 1.2 m (4 feet).
In some cities, fence construction laws govern the maximum height and various other construction factors for garden fences, according to materials used and the fences purpose. You need to apply for planning permission for your fence if it borders a road or a footpath and you want to make it higher than 1 m (40 inches). Elsewhere on your property you can build a fence up to 2 m (80 inches) without the need for planning permission. All fences in conservation areas, or close to a listed building, need planning permission.
If you need to keep deer out but cannot build a fence of 2.4 or 3.6 m (8 or 12 feet), other fencing options may be necessary. Outwardly slanted fences at approximately 45-degrees and to maximum heights of 1.8 m (6 feet) also provide effective pest control in the garden, defeating the leaping and climbing efforts of deer and other pests. Electrified fences at maximum heights of 1.2 m (4 feet), equipped with attractants will provide a psychological barrier around the garden to keep tall and small pests at bay.
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