Have you tried Listerine? I hear that works as an anti-fungal, anti-bacterial pretty well. And for the buggies...I mix up a spray bottle with rubbing alcohol in addition to a "take down" bug spray. I use something like a toothpick or skewer to get it down into the leaf axils and then turn up the heater and fans to help them dry. Good luck buddy, we had something like that last winter here and some nurseries lost entire collections. I ended up losing about 1/4 of my collection.