Not a hydrangea but rather Viburnum trilobum, aka American cranberry bush. The leaves are very distinctive :-)

Thanks!

It has lacecap flowers, produces red berries, very winter hardy and the leaves sometimes turn reddish in the Fall. Other vibirnums also have hydrangea-like flowers too. Hydrangeas have heart-shaped toothed or serrated leaves though. Did you buy this vibirnum?