I have a wisteria alba which flowers profusely every year. After flowering this year the leaves are curling up and dying-not thru lack of water- I have had this plant for over 10 years, it is an off shoot of a previous plant that was again about 10 years old and which died completely. I dug at the roots to find they were rotting but could not find out why and no one was able to throw any light on the reason for this. Has anyone had a similar experience? Is it some thing in the soil? Is it a disease? Can I save this plant? Could it have been the amount of rain we had last winter? Your views would be appreciated. Just thought, can you have wisteria wilt like clematis wilt?