If you are going to spend your money, spend it wisely - visit your local independent garden center.
Behnke Nurseries, located in the Washington D.C. area, have been in the industry since 1930 and they are still thriving as a family-owned establishment. Behnke's carries a full line of plants and garden products, including the "Baysafe" line of plants native to Maryland. I have seen their excellent selection of herbs, fruits and vegetables; trees and shrubs; seasonal color like poinsettias, and of course, gorgeous annuals and perennials. I am impressed. If you go in undecided or need any help at all, their knowledgeable staff can recommend an array of the best performing plants for any particular site. Go see them at either location-both are located conveniently off the Beltway-and tell them I sent you.
11300 Baltimore Avenue Beltsville, MD 20705. Ph: 301-937-1100