geez, friend, quite a problem,, indeed, and spreading?? yikes
just a thot weaseley,, i had a bit o mold on some drying buds i was drying,, ha,, go figure,,
so i tried a few things to see if i could salvage some, for oil or similar,,
so i sprayed it with my isopropyl alcohol mixture, 50\%, and it killed the mold instantly. now i know it did not get the mold inside the bud, just the outer,, but it seemed to work for my purposes
now, my outdoor plant had some powdery mildew on some leaves, and i sprayed the leaves with the iso spray as well,, and it killed the mildew as well
cool thing,, the purple leaves,, anywhere the mildew was on the leaf,, little round patches,, the spray killed the mildew, but the leaf under the mildew converted back to green from purple,, every spot,, too cool
bit warmer weather has my outdoor plant growing new buds again,, a bit longer i guess
wish i could help ya friend,, cheers