Hello everyone, it’s good to be here, I’m new to this forum and having a few problems. I am in southern Ontario and have my 4 big girls in the ground, they are flowering very well. Yesterday I noticed powdery mildew (PM) on some of the leaves, not very bad yet but very concerning. I have been pegging out stalks and thinning the leaves for airflow and light penetration but still with the rain we’ve been having I guess it’s inevitable. We have pulled additional leaves so that there is not any crossing over to touch others when dry, the colas are a different story not much to be done there. I have been reading about treatments, in that they are flowering most are not usable on the buds. Resin is not water soluble so I would say that my generic highly refined mineral oil is a no go and this has been confirmed a number of times elsewhere. Insecticidal soap was also suggested as forming a barrier between plant and mildew, this I would think would not mix with the resin and residue would rinse off. My two top contenders now are skim milk + water and H2o2 hydrogen peroxide + water, could anyone confirm that these (or one or the other) are safe to REPEATEDLY spray on buds that WILL be smoked. The leaf hoppers are not a major problem yet and with today’s rain they are absent, my interest in the soap though is in case they become a problem.
Thanks in advance