Subspecies discolor 'Sterilis', can be confused with 'Grandiflora'; but, it has a flatter-topped head , showing some areas of small perfe...Read Morect fertile flowers that are not covered by the sepals of the showy flowers. The corymbs are more uniform (not as lumpy), nor as rounded as those of H. arborescens 'Annabelle'.
Plants are 5' to 6' high. The old name that is occasionally used is Hydrangea cinerea 'Sterilis'.
Information from "Hydrangeas for American Gardens," by Michael A. Dirr (2004)
Subspecies discolor 'Sterilis', can be confused with 'Grandiflora'; but, it has a flatter-topped head , showing some areas of small perfe...Read More