“When should I prune my hydrangea?” is one of the most frequently asked gardening questions. At this time of year, although pretty in frost, the old flowerheads can start to look a little, well, scruffy. And the urge to tidy is strong. So can you cut them back now? The answer is maybe... The key is knowing which hydrangea you have . Below is a simple guide to the most common types and and when to prune them. Mophead & Lacecap Hydrangeas (Hydrangea macrophylla) These are the c