Answer: It is possible that a rabbit or vole might disturb the roots or chew through the stems of a clematis plant, however based on your description I suspect it may be suffering from a problem known as clematis wilt. This disease tends to affect plants at this time of year and causes them to wilt very suddenly just as you described. There is no cure for the condition but it is not usually fatal. Trim off the affected stems and keep the plant mulched and watered. The soil should be evenly moist like a wrung out sponge, not sopping wet and not dried out. Hopefully it will regrow and recover in the coming year.
Q&A Library Searching Tips