Garden Q&A: My hydrangea is still flowering. When will I cut it?

Whether you're a gardening beginner or expert, Irish Examiner columnist Peter Dowdall has the answer to your questions 

There are still some flowers on my hydrangeas. I've never seen this occur before at this time of the year. I cut them back a few months ago and they have grown very big. When can I cut the shrub back again?

ANSWER