Hydrangea arborescens 'Incrediball' forms white mophead blooms as large as footballs. The stems remain upright in all weathers and are strong enough to bear the large blooms, which have a diameter of up to 30 cm (12")!
The shrub can be cut hard back in the winter as it flowers on one-year-old wood. Plant the 'Incrediball hydrangea (also known as 'Strong Annabelle') in full sun for best results, but partial shade is fine too.
Protect from -20°C
Prefers dry conditions
Light sun/light shade