Make a few changes in your yard and to the exterior of your home and save money.
Plant trees. Deciduous trees like oak, maple, sycamore, gum, ash and dogwood lose their leaves in winter, letting the sun warm your home. In summer, their leaves shade your home. Plant these shade trees to the south since that side gets the most sun. Plant evergreens in a staggered or double line to the northwest of your home to block wind.
Plant small foundation plants to minimize the loss of cool air from the house in summer and to provide wind protection in winter.
Keep your grass green and lush to help keep your yard cool.
Use solar-powered accent lighting.
Use electric mowers and trimmers.
If you have a small yard, try a reel mower instead of one that runs on gas.