WindbreaksWindbreaks are similar in design to shelterbelts, but can also be made from other materials than plants. A good windbreak only slows or re-directs the wind, it doesn’t stop it entirely. It takes an incredibly strong structure to actually stop a good gust of wind. Trees make good windbreaks simply because they bend, rather than resist its force. Using buildings already in place, and fencing or planting trees strategically between them is an excellent technique for controlling wind. Windbreaks in the right place can effectively slow or re-direct prevailing winds. In many cases, windbreaks are only placed to deflect the strongest winds coming from one direction, as milder wind speeds aren’t such a problem.
Seasonally, weather patterns can change dramatically. Summer and winter winds can come from diametrically opposite directions, so windbreaks to deal with both these scenarios are important. Coniferous trees to the north of a site protect from cold arctic outflow winds, while deciduous trees planted to the south and west will have the added benefit of shade from strong sun from those directions. A comprehensive study of your site in all seasons will help you decide where a windbreak is needed. Utilize natural features and buildings to plan the best placement of a windbreak to give all the benefits possible.
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