Go Green - plant trees

Plant trees.
Planting deciduous trees -- those that lose their leaves in fall -- on the south, east or west sides of your house will lower your heating and cooling bills. The trees will shade the house from the sun in summer, and then let in light to warm the house in winter.

Well-placed trees can save you $100 to $250 a year in energy costs, according to the Alliance to Save Energy. The cost to plant trees varies by type and size.