At any given garden store, there are two plant characteristics that will nearly always guarantee a sale to me. The first is any flower that approaches the sky blue pigment characteristic of the Blue Himalayan Poppy (Meconopsis betonicifolia). The second is nearly any red and white striped flower. I'm a complete sucker for all of them, particularly roses, whether it's 'Fourth of July', 'Rosa Mundi', 'Scentimental', or one of a hundred others. Modern breeders have caught on and increased the numbers of these beauties recently so other gardeners must be bitten by the bug as well.
Last year I added a particularly beautiful striped herbaceous peony, 'Pink Spritzer' to my garden. I saw the famous Roy Klehm give a lecture at the National Arboretum during a trip to Washington D.C. two years ago and I had picked out 'Pink Spritzer' as one of the "must-have" additions during the lecture. Subsequently, I ordered it straight from Klehm's own nursery, Song Sparrow Farm (http://www.songsparrow.com/), and planted it during the Fall as suggested. This year, it gave me the first blooms, an unusual and beautiful single peony of red and white and a little green that makes a splash in the front of my peony bed. Song Sparrow Farm doesn't offer it online right now, so if you can find one and plant it, guard it carefully. Gardeners are gentle folk but they aren't above the sin of envy and a little pilferage in the pursuit of beauty.