Im hoping someone can advise me on my 2 issues. I have 2 clemtises (?!).
1. Montana has been planted about 4 years. Looks healthy and finished flowering about 3 weeks ago. Saying that, I think it has developed some new growth in last week. Should I leave it? Also, I have never cut it back thogh so I wondering when I can do that, and if so, how brutally?
2. Other clematis, type unknown, has loads of new growth and likely to start flowering in next week. I have seen though it is covered in black fly. I have never come across this before (you can tell I am a new gardener!). I assume I have to treat it. How is best to deal with it?
Your thoughts, tips and advice wd be much appreciated. Thanks!