Here are a few quick tips to help you save money and resources by planting trees (and other herbs): Plant lots of fruit trees and deciduous trees to the South of your house. Apple, Pear, and other trees that will bear fruit that you can actually eat.
Plant blueberry bushes, if you have acidic sandy soil. Blueberries are loaded with vitamins. Plant mugo pines around your blue berry plants to provide acidic mulch to the soil.
Plant lots of herbs to the south of your house. Basil, Oregano, Thyme, Terragon, Sage. All but Basil will come back every spring. Basil can be used on salads and to make your own Pesto Sauce at the end of the season. With 3-4 plants you will have enough Pesto to last you the winter.
Read Also: Indoor Vegetable Gardening
Plant coniferous trees to the north of your house to block the cold winter winds. White Pine grow very fast. White spruce and Balsam Fir provide a nice fragrant scent all year round.
Plant English Ivy along the South wall of your house and it will keep the house cool in summer and allow sun to heat the wall in winter.
Build a "Rain Garden". This is using the natural slope of your yard to drain water into your vegetable and herb garden. With a natural rain garden you will almost never need to use city water or other to keep your plants moist. Just remember to use raised beds in a "Rain Garden" so that your plants "feet" - roots don't always stay wet.
If you still have any lawn left buy a bag of White Dutch Clover and sprinkle the seed in the spring so that the clover takes over. The clover sets the nitrogen so that you don't need to fertilize and will thrive with almost no water - saving you a fortune.