My PM issue started on a Bubba Kush in my clone vegging box. I was able to treat it thoroughly in that state of growth. The problem started spreading before I treated but really responded to the treatment.

Later I had PM on some of my outdoor plants but it was not enough to kill any of them. It appeared late in the season and did not cause a wide spread problem.

Good plants to avoid PM are Pineapple and Blue Dream because they have very narrow leaves that let lots of sun through. They limit regular molding as well. They also don't need to be thinned much either.