My experience with this particular flower is that the plant might survive but most likely won’t bloom this season. I only have 2 and I covered them last evening. 27 in Hagerstown this morning.

Thanks for the info. I been landscaping for 40 yrs now. These are the Endless Summer hydrangeas the bloom continuously throughout the season. But there’s been so much damage from the cold. I doubt I see any flowers this season.