Jake Orden
Member
I have 3 week old seedlings that started getting tiny white dots on the top of the leaves about a week ago. None on the bottoms or stems, and they are fairly uniform over the leaves. Not spots on the leaves, more like very tiny whitish balls. Pretty sure its not spider mites (really hope not at least!) I think it could be powdery mildew from what I have found. I have searched extensively since I noticed it a week ago but I wanted to see if I could get some advice since I'm still not sure. Humidity around 40-45%, temps around 70F, no nutrients used yet and I am watering (growing in soil) every 3-4 days. The lack of great ventilation is what makes me think it may be mildew. It is in a closet and I try to leave the door open for a bit each day, and always have fans on the plants. I ordered a centrifugal fan and am waiting on that, and have the ducting all set up with an air cooled tube. Once this is running could it just go away on its own? I would rather not have to use anything to get rid of it if it was just caused by poor ventilation. Please help, I have invested a lot of money and time already and only 2 of 6 seeds actually made it so I really don't want to lose these 2 (1 fem jack herer, 1 fem ez bud). I tried to take pics but they are very tiny dots so I couldn't get decent pics. Nothing on the underside of the leaves either far as I can tell (I have been using a hand lens to get a better look). I also had fungus gnats for a bit but those seem to be mostly gone, and that doesn't seem to have much relation to the white dots as far as I can find. Any ideas?
