I have an arch with a Clematis montana growing up each side. They have only been in situ for 18 months and this year I was looking forward to lots of growth and flowers. One side the flower buds are nearly open and prolific. The other side looked ok until the flower buds appeared, then suddenly the leaves looked a bit limp and the buds droopy. I thought that a frost had damaged it, but the one the other side seemed ok. This was over a week ago and although everything is droopy on it , it still looks just about alive. It has not gone brown or dried out. The roots are in a rather damp part of the garden, where water collects after rain, but soaks away after a while. Would this kill it?