Buckinghamshire, United Kingdom
I have a clematis montana about 20 years old on my garage roof. As it has got more rampant it has inevitably got v. dense and unmanageable. This year it is showing v.little new growth . I could cut it back hard (after what I fear will be disappointing flowering) but from past experience this is not always successful. Any suggestions please?
- 8 May, 2010