so this is my first time growing. i have a blackberry kush plant 2 weeks into flowering and pm is starting to take over my plant, i have controlled the spores and i dont use the fan as often but nothing is helping cause they keep coming back. my friend has 3 blackberry kush plants from the same guy and he is running into the same problem. but he also has bagseed and other clones in the same garden that have alll started sporing powdery mildew.