The rose has earned its place as America's favorite flower. It's no wonder why: The blooms are beautiful, perfect for cutting, and many are wonderfully fragrant. The flowers come in a wide range of colors, from dark reddish black to pure white. Name: Rosa selections Test Garden Tip: Do a sniff test on roses before you buy them. Some are powerfully fragrant and others bear no scent at all. Plus, their fragrance varies as much as their color -- so...