Hydrangea: Limelight (Proven Winners)Top three reasons to grow 'Limelight' hydrangea: It's a time tested classic that graces the yards of thousands of homes across North America Large flowers have a unique color that looks great with any style and color of house. Blooms every year, even in cold climates winter doesn't faze it at all. Botanical Name Hydrangea paniculata Common Name 'Limelight' Panicle Hydrangea Plant Type Shrub, Deciduous Mature Size 6 8 ft. tall, 7 8 ft. wide Sun