Hydrangea Annabelle One of the more unusual varieties of Hydrangea, Annabelle is a beautiful deciduous shrub which sports spectacularly big clusters of white blossomy flowers with broadly oval leaves. Hydrangea Annabelle can reach up to 3-4ft in height but can be pruned every year if you prefer to keep them smaller in size. They look particularly spectacular when planted in a group and are the perfect addition to a white themed garden, these are incredibly elegant looking shrubs. This variety of Hydrangea loves full sun or partial shade and well drained fertile humus rich soil. The flowers bloom from July to September. As autumn progresses the dark green leaves turn to a soft yellow. Awarded the RHS Award of Garden Merit - a good sign they will perform well in UK gardens.