When you are looking to sell your house, the one thing everyone has in common is that they want to receive the highest amount possible for the sale. Of all the ways to boost your home's curb appeal when you put it on the market, what could be quicker or less expensive than planting some colorful garden flowers? In addition to trimming your trees and shrubs and freshening up your mulch, consider adding value to your home by adding one or more of these flowers to your front yard.