I recently noticed that several of my Violets seem to have been stricken down by some mysterious ailment. They seem to be wilting regardless of having water. I think it is related to having the windows in my house opened. I noticed the change in an otherwise healthy plant that sits next to a window by my treadmill. Within hours of my opening the window, it became wilted to the point of near death looking. Has anyone else noticed this behaviour? P.S. I live in Memphis and only open the windows when it is particularly pleasant outside, which isn't often.