Hydrangea leaf tips are brown and curling
I have three hydrangeas, all several years old and they grow prolifically every year. They are planted against a south facing wall. About mid March I removed the dead flower heads and pruned them, taking out about a third of the stems of each plant down to almost ground level. Until about ten days ago, they were looking good with lots of new leaves, but then we had a couple of late (for Somerset) frosts and now some of the leaves are curling and drying out at the edges. Weather for the past three days has been gloriously sunny and I've watered them well. I plan to cut off the affected leaves and hope that it was just a reaction to the frost. Does anyone have any suggestions as to whether there may be some other reason for this happening please?