Hey Dude, Guru, and Scotty Real. Just started listening to you guys about 6 months ago and become a Patreon member not long after. I listen to you guys all day at work. I’m a newer grower in prohibition land down south. Well I’m am fairly sure I have pm. What do I do? Do I kill off the plants? Thanks for the help.
What is your RH%? Any time I see that my temps are getting a bit high I try to add…
I have had good results using SF nematodes for fungus gnat control. I do High frequency fertigation in Coco so…
I like those names lol and yeah it’s a peace of cake to defoliate and trim
Hope it's a lockout or PH issue, if not look for those damn russets they cause lockouts too. They like…
If and when I try to stick to VPD is in veg only, once my ladies are in flower VPD…
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I would lose every crop to mold if I didn’t maintain the proper environment. Same goes for your crop. Fix the environment to fix your problem. Large swings in humidity allow PM to take hold and spread. Get your RH in check or you will never get rid of it.
It’s a fucker for sure Jmystro is your man but here is my two penneth, get rid of excess fan leaves and fans/dehumidifier pointing up from the floor. Try to get it sorted before flowering or be prepared to potentially start again. Try dumping some top dress of insect frass which might promote a strong antifungal response from the plant and help you get on top of it. Get your head round the conditions that lead to the problem i.e frequent moistening then drying. This might be due to a humidifier being to much or the temp swing when lights go off causing a dewpoint and droplets everywhere. Good luck hope it goes well
At this stage I have had success with wiping down each spot with alcohol/water mixture. Physically wipe it down gently. Spray with microbes or zymes after. Keep rh below 50. Keep up with foliar application until it subsides. Good luck.
going to have to stay on top of that now until the end. so many ways to handle it, but most important is to be vigilant.. goodluck
Well I suggest this a lot but it is a real butt kicker for pests and powdery mildew. Wettable sulphur is cheap I used it to decimate a russet mite outbreak. It worked so well at removing all pests from my plants that I would definitely try it for PM. If you can get them outside and up on a table to spray you can use a garden sprayer and hit plants and containers completely be walking around it and angling your nozzle. You are in veg so this would not affect your flower. If you do use sulphur be careful to wait at least a week before and after to spray any oils that are present in many pest sprays. When sulphur and oils are sprayed too close together it will burn your plants. Good luck.
Another treatment I was using is a hydrogen peroxide/water(6-10Tbps/gal) solution to battle some pm on a couple of outdoor autos that were finishing up. You need to spray it in direct light for it to work the best and if you use a newer hand sprayer they can usually produce a very fine mist that won’t cause droplets, and if the solution does bead up you can give the plant a little shake or light taps to the stem and branches to shake off excess, in fact I do it no matter what. I also use it on my tomatoes, peppers, roses, strawberries, etc. If you want to go for eradication find a strong enough concentration to just burn the leaves and back it off 1tsp and treat every other day.
Once it gets to the stems just kill the plant.
This happened to me in almost a garage like grow across a corn field. Unknow open vent to outside summer bugs were hard enough but that first cold foggy morning with no trim with hundred plants or more. Those spores are no joke. We scrubbed, fogged the room even and it still took 1 or 2 grows to kinda overcome random spots. Industrial Hydrogen peroxide as mentioned.
I would stop or halt a perpetual grow for any sign of powder mildew. I’ve seen it managed and I’ve seen the plants in flower look like it’s snowing. I’d start over if it’s not too far along.
I would definitely put a halt to