Thanks for the reply. I suppose that is entirely posssible, BUT...something I meant to mention. There are some plants among the others that seem almost completely unaffected by this problem. Most, BUT not all, are of a different variety. Also, in almost all the cases, the problem has started toward the bottom and moved up the plant. If it is in fact the Growth Excel causing the problem, than why are the tops OK?? Just a thought. Again, thanks. Any other ideas would be appreciated.