Plant Incrediball® Smooth Hydrangea in well-drained soil with full sun to partial shade. Space plants 4-6 feet apart. Water regularly, especially during dry spells, to keep the soil consistently moist. Fertilize in early spring with a balanced, slow-release fertilizer. Prune in late winter or early spring, cutting back stems to about 12 inches to encourage strong growth and abundant blooms. Protect from harsh winds to prevent damage to the large flower heads.