People will often use landscaping to reduce utility bills. Planting shade trees on the south and west sides of your house will reduce both your heating and cooling bills. They will shade the house during the summer, and water is continually evaporating from the leaves for an additional cooling effect. When the leaves are off in the winter, they will allow the sun to shine through and warm your house. They will also give some winter wind protection, because, even with the leaves gone, the branches will help to break up the wind.