HELP! White power spot on leaves

DrGreenThumb905 · Feb 27, 2021

Hey guys, I have one plant out of 4 that has some white powder spots on the leaves. I had been out of town for work

Now did use diematacous earth after finding some boy flies in the tent. I dusted the plants but I’m sure this isn’t from me.

should I pull this plant ASAP or is there still hope that it can be treated.

I did a panic defoliate haha but now I’m wondering if I did the wrong thing.

GNick55 · Feb 27, 2021

white powdery mildew..
i just finished a grow dealing with it.,
it’s evil!!!

DrGreenThumb905 · Feb 27, 2021

GNick55 said:
white powdery mildew..
i just finished a grow dealing with it.,
it’s evil!!!

Is there anything I can change or do? Will this spread or ruin the bud?

GNick55 · Feb 27, 2021

GNick55 said:
white powdery mildew..
i just finished a grow dealing with it.,
it’s evil!!!

by the looks of it your plants have been suffering for about 4 weeks to a month.,
your other plants are probably infected.,

DrGreenThumb905 · Feb 27, 2021

GNick55 said:
by the looks of it your plants have been suffering for about 4 weeks to a month.,
your other plants are probably infected.,

So your thinking the is should chop them and start over?

GNick55 · Feb 27, 2021

well because of them being in flower, you can use 29-30% good grade hydrogen peroxide mix down to 3-6% strength and soaked them once a week, after about 10-15 mins of soaking, crank on the fans for a day or two to dry out the buds.,
just an option, basically what i did and i got them to the finish. mildew free, though i’m still checking as it can grow on drying plants..
i’ll be making oil out of all of it..,

DrGreenThumb905 · Feb 27, 2021

GNick55 said:
well because of them being in flower, you can use 29-30% good grade hydrogen peroxide mix down to 3-6% strength and soaked them once a week, after about 10-15 mins of soaking, crank on the fans for a day or two to dry out the buds.,
just an option, basically what i did and i got them to the finish. mildew free, though i’m still checking as it can grow on drying plants..
i’ll be making oil out of all of it..,

Appreciate the help! Hoping they bounce back.

GNick55 · Feb 27, 2021

well, you have to make that decision as you will have to maintain it till the end.. it’s in the early stages, but you have to do something now..
you should receive a lot of options here of what to do other than mine, but that’s what worked for me.. in my thread what’s gnick55 up to i posted weekly updates.,

GNick55 · Feb 27, 2021

what medium you growing in?

DrGreenThumb905 · Feb 27, 2021

GNick55 said:
what medium you growing in?

Organic Pro-Mix

GNick55 · Feb 27, 2021

cover the soil with something so the h2o2 stays out, if you spray the plants..

GNick55 · Feb 27, 2021

low concentrations of h2o2 are fine for plants it occurs naturally in rain water..

TerpiestToker420 · Feb 27, 2021

No expert but you could also try some potassium bicarbonate same stuff as greencure which I cant find anymore, you foliar spray the plants with it and it acts as a natural fungicide although after spraying I would still dunk my buds before harvesting who knows what the stuff converts into when its combusted

RealizedReal000 · Feb 27, 2021

I would say if your adamant about keeping em do the h202. But maybe put a plastic film on top of the pot and then spray so it doesn’t kill any microbial life I’m the medium.

DrGreenThumb905 · Feb 27, 2021

GNick55 said:
low concentrations of h2o2 are fine for plants it occurs naturally in rain water..

I was just reading neem oil sprayed works, I’m only asking because I have some. I’m going to hit the drug store up soon for

RealizedReal000 said:
I would say if your adamant about keeping em do the h202. But maybe put a plastic film on top of the pot and then spray so it doesn’t kill any microbial life I’m the medium.

Thanks for the info. All was thought to be going good and then this powder spots . Fingers crossed.

Kanzeon · Feb 27, 2021

Just spray them liberally with 5% by weight micronized sulfur in water and rinse after chopping. H2O2 won't prevent future outbreaks.

PM has colonized in these plants, so don't reveg them, take cuttings, or try to reuse the soil. Don't spray your neem oil on flowering plants, either. Get your buds finished, get them off, and get rid of everything else.

If left untreated, it will get much, much worse.

RealizedReal000 · Feb 27, 2021

Kanzeon said:
Just spray them liberally with 5% by weight micronized sulfur in water and rinse after chopping. H2O2 won't prevent future outbreaks.

PM has colonized in these plants, so don't reveg them, take cuttings, or try to reuse the soil. Don't spray your neem oil on flowering plants, either. Get your buds finished, get them off, and get rid of everything else.

If left untreated, it will get much, much worse.

I agree neem oil on the buds is no bueno. I use that in veg only. Lol

GNick55 · Feb 27, 2021

RealizedReal000 said:
I agree neem oil on the buds is no bueno. I use that in veg only. Lol

full strength milk during veg is even better with intense lighting, like a 1000 watt metal halide.,

RealizedReal000 · Feb 27, 2021

GNick55 said:
full strength milk during veg is even better with intense lighting, like a 1000 watt metal halide.,

Please explain! Lol
I’ve never heard of using milk. Haha

TerpiestToker420 · Feb 27, 2021

RealizedReal000 said:
Please explain! Lol
I’ve never heard of using milk. Haha

Not trying to steal your post but while we're on the subject I found a spot of pm on one of my plants and its barely noticeable under 60x on the buds and when I break apart the buds a white smoke whisps off them they are super crystally and someone mentioned this could be trichomes but i highly doubt it since none of the other nugs do this... Should I just make some edibles or rosin caps with this bud the rest of its good nug.? Fuck mold

HELP! White power spot on leaves

HELP! White power spot on leaves

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