Anyone with vast knowledge of powder mildew please?

Yesyes3000

Yesyes3000

Well-Known Member
Hello everyone. I’m posting here in hopes of acquiring the attention and knowledge of an advanced grower with experience with PM (powder mildew)
Is it something that can’t be gotten rid of ? Is eagle20 get rid of it ? Or do all the remedy’s people share just keep it from flaring up ? I’ve read of people who have had pm and then gotten rid of it. My friend is having some problems with it and has done all the obvious changes to help his situation. Anyhow if people could just share how they got rid of it that would be awesome. Thank you for your time !!

grateful 3000
 
randallb

randallb

Well-Known Member
Depends how bad it has gotten. PM sucks! You've probably read this but here's what I do. I'm not growing in mass quantities.

1 teaspoon vinegar to 1 gallon water. Mix and spray the crap out of everything. Repeat 2 days later. Then 2 days later spay neem oil. I try and not spray the neem oil into the buds, then again in 3 days. If some get on, I'm going to wash the buds at harvest anyway.
Meanwhile, pluck the really bad leaves throughout this process and toss. Plants will be looking much better. Then I maintain with the neem spray.
 
FastFreddi

FastFreddi

Well-Known Member
Vinegar lowers ph...pm loves acidic conditions. Try using a high ph 8+ with added h2o2 if in flower...be mindful of budrot. Protect the medium from heavy runoff...don't want to hurt the herd( if in soil).
Good luck
FF
 
rob333

rob333

Well-Known Member
Yesyes3000 said:
Hello everyone. I’m posting here in hopes of acquiring the attention and knowledge of an advanced grower with experience with PM (powder mildew)
Is it something that can’t be gotten rid of ? Is eagle20 get rid of it ? Or do all the remedy’s people share just keep it from flaring up ? I’ve read of people who have had pm and then gotten rid of it. My friend is having some problems with it and has done all the obvious changes to help his situation. Anyhow if people could just share how they got rid of it that would be awesome. Thank you for your time !!

grateful 3000
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burn it burn it all to the ground works everytime trust me
 
TessaMaria

TessaMaria

Well-Known Member
I use Actinovate. It works well during an outbreak, I triple the dose and then spray weekly. I found this to work the best for me. I’ve use milk sprays and hydrogen peroxide sprays too.

Another preventative that works well is Neem oil and Monterey Disease Control.

I also wash my harvested buds before drying them so they never taste like neem oil. The Wash isvery good it makes for a really clean smooth smoke.

As for getting rid of it, if it’s outside I just have to keep spraying with things that hold it back and I’m in a climate that can be perfect for PM to thrive. Outside I can’t seem to get rid of it but I can keep it to a minimum and prevent it if I spray preventatively from the beginning of the plants life.

If it’s inside a grow room or controlled area. I think you can get rid of it if you meticulously clean the area really well before the next round of plants and then you can control the temps & RH to make an environment that prohibits the growth of PM.

There is lots of information online and here is one link to some good info

 
randallb

randallb

Well-Known Member
FastFreddi said:
Vinegar lowers ph...pm loves acidic conditions. Try using a high ph 8+ with added h2o2 if in flower...be mindful of budrot. Protect the medium from heavy runoff...don't want to hurt the herd( if in soil).
Good luck
FF
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Yes I want to lower ph and Vinegar has been working like a charm doing that, so I'll stay with it. PM dies, it certainly doesn't love that type of acidity. I have also tried the higher ph route with baking soda and not had as good a result. Plus the residue from the bs looks like pm a little.
 
BobCajun

BobCajun

Well-Known Member
I don't know about PM but gray mold likes acidic conditions, it actually exudes oxalic acid to acidify the area around it. That's why people use alkaline spray, like potassium bicarbonate. It can cause some damage though, a little browning of some calyxes. UVB is supposed to be good for killing PM and other molds. Maybe you could try adding some to the spectrum, taking necessary precautions to avoid exposure. Of course you should wash the buds after harvest to remove anything you apply with spraying, and any mold that's on them. Don't use any chems like Eagle 20 unless you like poisoning yourself or whoever smokes it. That stuff is not made for smokable plants, it turns into toxic compounds when burned.
 
Zoonotic6988

Zoonotic6988

Member
I just went through this... I ended up reading about spraying with diluted h202. I did a solution of 3% then mixed it 100ml into 1L and sprayed the plants down like crazy. I did this for a few days and it literally all disappeared. I run perpetual with multiple rooms and it was even spreading into my vegging room. Since soaking everything it all cleared up and now I spray em every week with h202 incase.
 
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C

Cardlee P

Well-Known Member
Get an ozone generator. Or get rid of those weak clones. Serenade will let you squeek by till conditions improve. Fresh vigorous seedlings got the best chance out of all this.
 
G

GGR

Member
I'd start with stabilizing your humidity if possible in the space, make sure you've got good airflow, down low especially, make sure you've also got a good amount of air being exchanged in and out as well. Greencure at half the recommended dose alternated with the dilute h2o2 will help knock it back, regalia is definitely a great way to help the plant itself try to fight it off, Bennie's in a foliar app(depending how far along you wanna spray) will compete with and consume the pm, silica in your feed regimen and or foliar sprayed will help in 3 ways 1 higher ph helps mitigate the pm itself 2 it will be absorbed into the plant to help strengthen leaves, ie harder for the pm to penetrate the surface 3 the plant can load it up in an infected area to help the plant fight it off, running a sulfur burner in the space can help big time but not advisable post wk 5 of flower, I had the crap bad a grow back and used all of these things in unison to beat it into submission, I also heated my whole space between runs to 115f for about 4 hours then followed up with a 2 hour sulfur burn, lots of work lol.I know it's still around hiding but with dialed conditions and a good ipm you shouldn't have to deal with it again, I just treated it like mites really attack on all fronts hope I helped you sir and good luck with your battle
 
God of Agriculture

God of Agriculture

Well-Known Member
Greecure works best and I've used neem, baking soda, h202, milk etc..but much better outcome with Greencure. First dose use 1 tablespoon per gallon...then half a teaspoon every 7 days....and they'll be just fine. Using the recommended dose will brown pistils but new ones will emerge. Works on CONTACT as it immediately dehydrates the spores. Can use it pre and post harvest...leaves no residue or actually taste and no foul smell, plus it's ALL organic and safe for all.. Happy Grows!
 
Yesyes3000

Yesyes3000

Well-Known Member
GGR said:
I'd start with stabilizing your humidity if possible in the space, make sure you've got good airflow, down low especially, make sure you've also got a good amount of air being exchanged in and out as well. Greencure at half the recommended dose alternated with the dilute h2o2 will help knock it back, regalia is definitely a great way to help the plant itself try to fight it off, Bennie's in a foliar app(depending how far along you wanna spray) will compete with and consume the pm, silica in your feed regimen and or foliar sprayed will help in 3 ways 1 higher ph helps mitigate the pm itself 2 it will be absorbed into the plant to help strengthen leaves, ie harder for the pm to penetrate the surface 3 the plant can load it up in an infected area to help the plant fight it off, running a sulfur burner in the space can help big time but not advisable post wk 5 of flower, I had the crap bad a grow back and used all of these things in unison to beat it into submission, I also heated my whole space between runs to 115f for about 4 hours then followed up with a 2 hour sulfur burn, lots of work lol.I know it's still around hiding but with dialed conditions and a good ipm you shouldn't have to deal with it again, I just treated it like mites really attack on all fronts hope I helped you sir and good luck with your battle
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Thank you very much. It’s my friend who is struggling. I gave him 30 clones. They are lemon og kush , gorilla bomb,cheese, white widow. I never had pm on any of them b4. I think that he got it at his house somehow. Maybe from an outdoor plant. But I was wondering if it possible for pm to be inside clones cells or w/e and the pm doesn’t flourish until it’s got the right conditions maybe ? Idk . Also is it possible to completely get rid of it ? Or once it’s on the plant it can never be 100% removed ?
 
J

JesusFreakier

Member
Yesyes3000 said:
Hello everyone. I’m posting here in hopes of acquiring the attention and knowledge of an advanced grower with experience with PM (powder mildew)
Is it something that can’t be gotten rid of ? Is eagle20 get rid of it ? Or do all the remedy’s people share just keep it from flaring up ? I’ve read of people who have had pm and then gotten rid of it. My friend is having some problems with it and has done all the obvious changes to help his situation. Anyhow if people could just share how they got rid of it that would be awesome. Thank you for your time !!

grateful 3000
Click to expand...
Hi All, I suffered from White Powder Mold and discovered a large patch of it on the neighbor's lawn outside my building. Yes some strains are prone to it 10X, and some resist it well. H2O2, not the best choice. The absolute cure is Mite Massacre at 1/2 strength. WARNING, this stuff is absolutely worthless for Spider Mites, yet it is the absolute cure for White Powder Mold. Use 3/4 tsp per Quart of water. Spray bottoms and tops of leaves and every stem and branch. Spray the soil too, the pots, and walls and ceiling. Will not hurt the leaves. WARNING, if you mix as instructed for Spider Mites, it will trash every leaf and you will be so sorry they even sell this stuff as Spider Mite control. For spider mites during veg, use Pyrethrins such as Mighty Might Control. You can make it stronger with a few drops of 35% Pyrethrins. Unless you smoke the veg, no issues doing this. No leaf harm or any ill effect.
 
manfredo

manfredo

Well-Known Member
Yesyes3000 said:
But I was wondering if it possible for pm to be inside clones cells or w/e and the pm doesn’t flourish until it’s got the right conditions maybe ? Idk . Also is it possible to completely get rid of it ? Or once it’s on the plant it can never be 100% removed ?
Click to expand...
I believe that'e very possible, even likely that the pm was there and just didn't flourish until the right conditions came along. But it's also possible it came from something else, even your friends soil.

IDK whether it can ever be completely eradicated...It's one of those strange common diseases that even the best experts don't agree on whether it is systemic or not.

I am having good luck with potassium bicarbonate, and it is only $10 for a pound, and can be applied daily, even in flower. mix 1 tablespoon PB with 1 tablespoon teaspoon mild liquid soap to a gallon of water and spray when lights are out. After 2 treatments my PM is mostly gone (to the eye). And supposedly it can eliminate the problem.

Amazon.com: Potassium Bicarbonate - 1 lb. : Health & Household

Buy Potassium Bicarbonate - 1 lb.: Potassium - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
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manfredo

manfredo

Well-Known Member
Mr Westmont said:
I might like to add, ever since I went completely organic, I have not experienced a single spot of powdery mildew.
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Consider yourself lucky, because i grow completely organic and I got it...I personally think organic is worse for pm, as you have all that naturally decomposing goodies in your soil. But of course it makes for better final product!
 
Mr Westmont

Mr Westmont

Well-Known Member
manfredo said:
Consider yourself lucky, because i grow completely organic and I got it...I personally think organic is worse for pm, as you have all that naturally decomposing goodies in your soil. But of course it makes for better final product!
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I STRONGLY disagree with the bolded and underlined part of your statement. That goes against the very fundamentals of how bacteria, fungi, and plants work) (Source: my AA in horticulture, BS in Environmental Science, and 2 years of masters work at an USDA research farm). I wouldn't say lucky at all. Just followed some agricultural principles. Do you generally see powdery in general in healthy gardens? PM only attacks weak plants, just like spider mites, and lions on the african savannah. Right? I mean they chase after the young and the weak. I can tell my plants are healthy, based on the color, smell, growth, and especially big, thick, fat, greasy fan leaves. When leaves are thin, kinda roll over, or have almost a transparent look to it, you have an unhealthy plant.....and susceptible to PM. My next door neighbor, who grows, has no clue. Spider mites and PM everywhere. And I mean right next door. We pass joints and beer over the fence to each other. But still, not a single mite or PM spot on my plants.
 
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