The Dinner Plate Dahlia The Big Wow, 'Dahlia The Big Wow', produces enormous bright red flowers. Marvel at the size and color of our "dinnerplate dahlias"! Truly as big as a dinner plate, these specially-selected prize-winning size dahlias are the most spectacular we've ever offered. A single stem will make a statement and you'll find your-self cutting and sharing these fall beauties with friends. They are hardy in zones 8-10; elsewhere dig and store in frost-free area. Please note that pinching of the secondary buds will produce even larger flowers.