Dinner plate dahlia bulbs are so popular because of their impressive huge bloom. They can grow a bloom size of 10" or more! Dinner plate dahlias will start flowering in early summer and continue blooming well into fall, until the lingering frosts tell you winter is on its way. Grow these tall, dazzling flowers at the back of your garden or border planting, surrounded by lower-growing dahlias or perennials. They are often planted against a fence, wall, hedge or raised bed. These dahlias are known to be a cut flower favorite that provide gorgeous blooms for all summer dahlia bouquets.