I love wisteria and had always heard it was easy to grow and hard to kill (my kind of plant). I bought two plants in spring 2006. They thrived all last summer and started growing again like gangbusters this year. About a month ago, one started to turn yellow/grey and stopped growing. Now, the other has begun to do the same thing. I have watered and applied Miracle-Gro, but it has not helped. I am a novice gardner, so I am appealing for suggestions. if anyone has any ideas about why the wisteria is dying, I would welcome advice.suggestions.