I hate Black rot!!!!! I am sorry you have to fight that! I can just feel with you!
I had some this Summer, but that was nothing compared to some other years. I had several trees cut down which in previous years had rained fungused leaves all Summer over my Orchid cage. I really believe that removing those trees helped a lot in my case. Drier weather when it was chilly out helped too around here.
Silicon solution? What are we talking about?
