I've also heard that 3% hydrogen peroxide works well too.And very cheap at wally world.
killerweed420 Reviewed by killerweed420 on . Question about MOLD for OUTDOOR growers. pics included. I am indoor grower and I don't have much of experience in outdoor growing. I had extra couple female clones and I planted them in my balcony where they get plenty of sun (and rain + humidity too, I guess). white "frost" started appearing on some leaves about 2-3 weeks ago. I was removing "frosty" leaves in the beginning but then I gave up. At the moment plants are about 5 weeks into flowering and most of the leaves are covered with the "frost". Seems like some kind of mold to me. Water I am Rating: 5