Hydrangea ar. 'Strong Annabelle'® 5lHydrangea arborescens Strong Annabelle White Flowering Hydrangea Shrub 5l Hydrangea arborescens Strong Annabelle is an improved, sturdier version of the much loved Hydrangea Annabelle. This beautiful deciduous shrub produces large, rounded clusters of pure white flowers that stand proudly on strong stems throughout summer. Unlike many traditional Annabelle hydrangeas that can droop under the weight of their blooms, Strong Annabelle features stronger