Hydrangea arborescens 'Annabelle'Hydrangea arborescens Annabelle' Smooth Hydrangea Annabelle is an outstanding hydrangea variety. A favourite among many gardeners, and noted for its prolific display of huge flower heads up to 30cm across that breathe life into shady areas of the garden. Blooming from late spring through summer, the initially lime coloured flowers mature to a brilliant white, then return to a pale green in late summer. This deciduous shrub is wonderful as a backdrop