From the source "Encyclopedia of Hydrangeas" C.J. and D.M. Van Gelderen (2004 - Timber Press):
A medium sized shrub up to 5 feet. ...Read More Corymbs are large. Ray flowers form a single ring and are purplish-red, sepals are entire; fertile flowers pink. Lateral buds sometimes produce flowers. Suitable as a pot plant and is good for outdoor cultivation. Bergink means "mountain finch."
From the source "Encyclopedia of Hydrangeas" C.J. and D.M. Van Gelderen (2004 - Timber Press):
A medium sized shrub up to 5 feet. ...Read More