Thank you all for your replies. I sprayed both girls with strong baking soda solution.
I will keep you informed as to how it worked.
orange_cloud Reviewed by orange_cloud 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