I have a critical purple about 2 weeks from harvest and a berry ryder that Could be chopped any day now. Today I went to check on them and see some white spots on the leaves. Is this mold?? Can they be salvaged? My RH is 52% and temps are 64-65 degrees. There was nothing on them yesterday. The ryder has maybe 2 leaves with spots but the critical had 5 or 6.
Is this mold??
- Thread starter Romokid
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So it’s salvageable? A buddy from work said to junk them. At this point I’m starting to trim all of the fans and any thing else but the bud. (Unless some sugar leaves have it then I’m trimming them). Just didn’t know if it is worth the risk at this point.
Thanks for the reply.
Thanks for the reply.
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yepif it was budrot it would be bin buds.but as its powdery mildew its kinda ok 
keep er lit
keep er lit
There are quite a few products and homemade concoctions people use to treat WPM. Among the effective treatments are:
- Milk (1:9 ratio of milk to water)
- Baking soda (2 tablespoons per gallon of water)
- Neem Oil (4 teaspoons per gallon of water)
- Hydrogen Peroxide (1 teaspoon of 35% H202 per gallon of water)
- SM-90 (1:5 ratio of SM-90 to water)
- Remove White Powdery Mildew from leaves – Get some water (tap water works fine) and some paper towels. Wet the paper towels and use them to gently wipe the mildew off the affected leaves whilst being careful not to jostle any leaves with spores on them. Using a wet cloth will ensure that more spores stick to the cloth instead of becoming airborne. Note: While it isn’t necessary to use paper towels, their disposability helps to curb the spread of spores from one leaf to another.
- Ensure plants have proper airflow and ventilation – Even if you have absolutely no airflow or ventilation in your grow room, having just two fans will drastically reduce your chances of encountering WPM while also benefitting your plant’s overall health. One fan should be oscillating if possible and should gently blow air over your plants. All the plants need is enough air to gently rustle their leaves which will make it hard for WPM to settle down. The second fan should be in your grow room pointing outward to exchange old air with fresh air. Having a fan pointing out of your grow room will force old air out of the room, and in turn, pull new air into the room. At this point, you’ll have new air coming in, being used and circulated, then kicked out. Keep in mind that two fans is a minimum.
- Treat the infected plant with one of the options below to kill spores prevent future growth – Mix up your treatment of choice in a clean sprayer/mister. We recommend Lost Coast Plant Therapy (1oz/2btsp per gallon of water) or GrowSafe (2oz/4tbsp per gallon of water) as a safe second option. Make sure to consult the instructions on your treatment of choice to find the recommended dosage. Wait until just before your lights for off for the day and mist your (newly cleaned) plants. Get all the leaves even if you don’t see WPM on them!
- this info was stolen another site, but its great info
Cotum3 thanks for that info. I had read about using peroxide. Unfortunately I "trimmed" most of the leaves off both plants, even if I didn't see any PWD. Probably should have done a little more reading. Hopefully I didn't do more harm than good, but seeing as this is my first time growing autos (actually 1st time with a plant with buds as the previous 2 attempts resulted in 6 males) I'll have to chalk it up as a learning experience. So after "trimming" all the fan leaves and anything else that had PWD on them, I sprayed them with 3% peroxide from top to bottom. I also now added an additional fan for more air flow and tried to up the temp and turned on the dehumidifier to lower the RH below 50%. Kind of my own fault as I just completed constructing a 4x4 grow area that is more closed in now with less ventilation than where I had them before. I should have left them alone for these last couple weeks as I didn't have too long to go as the ryder is starting to show amber trichomes.
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Its a long learning curve, and we never stop learning, in the case of pwd, you have to be on top of it everyday from now on, once the grow is over clean everything in the tent too, get rid of any spores that are hanging around.
Remember what happened, how you got there and try not do it again... but "the best laid plans of mice and men" and all that.
Remember what happened, how you got there and try not do it again... but "the best laid plans of mice and men" and all that.
Yeah, I have one 33" Blueberry auto in their too and I checked that all over and nothing was on that. I'm thinking that the other 2 had more dense leaves whereas the blueberry is taller and the nodes are spaced further apart. When I get home from work I will be grabbing giving all 3 a good look over again. (the wife keeps giving me crap for all the time I spend going down stairs to check on them lol)
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