That wind burn. I've been looking at plants for a while and I couldn't tell you what windburn is. Have you actually had it? I hear of it all the time and watch for it but never have I seen it. I want to say it's an imaginary thing but it's so common to hear I just don't.I get this a lot in my RDWC tent. That's why I defoliate and that's why I've been putting up with the windburn from the floor fan. Otherwise, all the leaves in the middle are wet to the touch.