The tendency is towards pink in the new Hydrangea arborescens. The variety Pinkerbell has been chosen for the strength of its stems capable of supporting large, half-rounded flowerheads of 20–25 cm. The big, wide-petalled flowers, are firstly coloured yellow-green and develop to a clear pink from July to September.
The firmness of its stems is evident from the initial growth in a pot, then in a garden, even when exposed to wind and rain. It's a species that prefers a semi-shaded position although its colours are more vivid in the sun as long as the soil is kept sufficiently moist in summer.
Prune back at the end of winter to encourage branching and reinforce the stems.