Z Hydrangea

One of the Z series of black stemmed hydrangeas. I think this one’s Zorro but can’t be sure. I bought three and finally moved them over to the shady side last May. They have all thrived magnificently but just noticed today that one of them is significantly wilting. I gave it 3 cans of water and will have another look tomorrow morning.
Strange day - we headed down towards the Mull of Galloway for lunch with friends. No sign of any activity when we arrived at their home! I checked our texts and confirmed confidently that we were definitely expected on 3rd July at 12 noon - right time, wrong day! We went home via Logan Gardens bistro for lunch and I gave my rose bouquet to a lady working in reception. She gave them to her granny who had just had a fall! Nice lunch and I bought some fab new plants! Tomorrow we try again.