Hydrangeas are a flower that is both adored and deplored.
Naomi Slade has written a beautiful and definitive guide, called Hydrangeas (published by Pavilion Books). She says: ‘They’re so familiar, but people don’t actually know them as well as they think they do’.
I asked her for the facts and the myths on such issues as ‘how to turn my hydrangea blue, which hydrangeas are best for shade or sun and will a climbing hydrangea damage my wall?’
Hydrangeas start to flower in