Hydrangea aborescens Incrediball® (Smooth Hydrangea)As a cut flower, Incrediball will need a large vase to support the incredibly large inflorescence, but in the garden very strong stems will hold them! The huge white flower clusters appear in mid summer and age to lime green. This native cultivar grows 4 5' tall and wide. Use in the back of the mixed border or as a hedge. Plant 5' apart. PP#20571 Photo courtesy of Spring Meadow Nursery. Sunlight Requirements: Full Sun to Partial Shade USDA Hardiness