Annabelle Hydrangea Plant. Hydrangea arborescens 'annabelle' annabelle is the best known variety of smooth hydrangea arborescens. Plant hydrangeas in spring or fall, and.
In early summer, this deciduous shrub produces huge, rounded flower clusters, up to 12 in. Annabelle hydrangea is a variety of hydrangea that strives in full shade. The hydrangea annabelle is part of the aborescens species.