Posted: 02/05/2015 at 06:56
I have found that sometimes at this time of year a clematis will put on a lot of growth and then a shoot will just flop and die back. I leave it alone and it grows new sideshoots and is fine.
This has happened to my Clem. viticella Purpurea Plena Elegans this spring. It was planted last spring against a west-facing wall. It has performed beautifully. It was cut hard back and is now making lots of new growth.
Last week the top 12 inches or so of the tallest shoot just became limp and floppy. I looked for snail damage but couldn't see any. The soil is moist. It's in a protected spot, nothing had knocked it - I just left it alone and can see that already that stem is putting out side shoots.
As I've said, this is not the first time I've had this happen to a clematis - I'm not worried about it because it never seems to affect the plant in the longer term, but I am curious as to why this happens
Perhaps Richard has an idea?