About a year ago I began trying to grow trees for an orchard; I only planted two seeds as an experiment and one grew. That particular tree is currently 14 inches tall and budding with new leaves.
Two weeks ago Michael ( my girlfriend ) and I planted a series of seeds we collected from grocery store apples. As of this post there are four sprouts. When these trees mature they will provide shade and food. Provided all the trees survive we will be able to make fresh apples available for purchase.
This endeavor will of course use a considerable amount of water, however we will have it "plugged in" to our grey water system so there will be no need for wasting this valuable resource.