15 Fast-Growing Flowers for a Cutting Garden

These long-stemmed garden annuals can grow up to six feet tall, thriving in even poor soil. They feature fine, sprig-like foliage and blooms that are up to three inches across. They're available in reds, whites, pinks, and purples and are a favorite in butterfly gardens. USDA Zones 5-10

TOH Tip: Don't use large doses of fertilizer on this, as it will suppress blooms.