Lack of flowers on Clematis Montana
I have two large pink clematis Montana at opposite ends of my Cardiff garden which are over 20 years old. Each year they are a mass of flowers - until this year! There are only a handful of flowers on both plants, although there is lots of healthy-looking growth and foliage. They seem to have enjoyed benign neglect in the past, and only get pruned when I have to cut back growth over the path. Any ideas why this year is so different to the others? We've had a mild but very wet winter here - could that be the problem?