In Lompoc, California, Burpee Seeds grows a lot of flowers for wholesale seed sales. For WW II and the Vietnam War, they planted one large field as a flag. This year, because of September 11, they once again planted a flag. Vandenberg Air Force Base, which is on the outskirts of town, did an aerial picture of it.
Click here to view it:
http://www.vandenberg.af.mil/30sw/AerialFlag.jpg