Treating powdery mildew with H2O2

Hey guys, hope y' all doing great!

So, tomorrow will be first day of week 5 of flower. I got PM a week ago, just a few tiny spots on a few lower leaves,but overall my plants look really healtny and maturing in a steady pace. I started spraying my plants with a mixture of 240ml of 3% Hidrogen Peroxide with 4L of water as soon as I've seen the first signs of PM, and been spraying it every 3 days , it is keeping PM under control but it is not removing it completely.
I've read a therad somewhere where a guy was strongly suggesting not only spraying them with that mixture but also watering your plants with it, I also read that h2o2 is killing all fungus but it also kills all the good and the bad bacteria and micro organisms. So I just wanted to see if anybody here had any previous experience with this , particulary like in my case where it happened in the middle of flower. My schedule is water water feed , so I was planning on watering them with h2o2 before I do my next full feed. What are you guys thoughts on that?

Hi Unique
I just went through 2 grows of WPM and h202 didn't solve anything for me. I tried it diluted, I tried if full strength. Slowed it down for a little then it came right back. I tuned my enviro as best as possible. Seems WPM likes the same temps as my Tomatoes. I tried Milk, diluted as many ways as you can imagine same. What worked for me was Baking soda, Cooking oil and dish soap mixed. The proportions are on line somewhere (Youtube i think is where i found it). All i can say is good luck. It got so bad on my last grow i had to chop early or lose the buds. it looked like a snow storm (Too bad it wasn't trichs) Then I had to wash in h202 after the chop to clean up any residuals left

By the way you need to spray it on the plant. You can try in the medium but you will definitely have to Spray or it will spread like wildfire.

Hey Blunoser, thank you for your quick response!
Yes, I've read about baking soda,veg oil and soap, milk and even 99% chlorine. But most of feedback I got was that I should use h2o2 for the best results, and I've heard so many possible solutions that I don't even know what to do anymore. What do you think, could I at least keep spraying it every 2 days untill harvest and keep it under control, because as I've said earlier , except my plants have PM they look amazing and it would be such a waste to infect the buds with this shiiiiieeet

Get rid of as many infected leaves (spores) as possible. That shit spreads really fast.

I Sprayed every weekend. Once i got in flower I sprayed Weeks 1 and 2 then no more. Buds were starting and like yourself i didn't stuff on the bud if i could help it. Try every method, i did. You will find one that works for you. Just remember WPM is a living thing and it really likes the same environment as your plants so it's a bitch to deal with. It took me 5 months to rid it. After the last harvest i washed my tent and groom with bleach and i mean everything that was in side or near these areas. I know it's just waiting for the right conditions to re appear. Then we will go to war again. You know what they say "you win some you lose some"

Okay buddy , thanks for the info, very much appreciated!

Listerine and water

Google it

Frank Nitty said:

Listerine and water

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How often, and can I use it all the way to flower without harming trichs and buds?

In the past, a 20 watt (I think, not sure) uvc/ozone generating light bulb did the trick for me. A few (very careful, uvc is very harmful) treatments cleared it up (after I'd also rubbed down any PM areas with a tissue+h2o2).
Search around online for info about uvc and PM.

The than whats been mentioned, clear any leaves that are touching (and thus creating wet spots on the leaves). The extra airflow will help too.


Peace.

i used h202 to kill bacteria causing root rot and use hydroguard as a way to simulate root growth after the h202 treatment. 2-3 days using h202

h202 kills bacteria by oxidization which causes the break down of the cell wall of the bad bacteria. your plants cells' cell wall is a lot stronger and won't get effected by h202 so don't freak out about it.

Mr_X said:

h202 kills bacteria by oxidization which causes the break down of the cell wall of the bad bacteria. your plants cells' cell wall is a lot stronger and won't get effected by h202 so don't freak out about it.

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Will keep that in mind

Mr_X said:

h202 kills bacteria by oxidization which causes the break down of the cell wall of the bad bacteria. your plants cells' cell wall is a lot stronger and won't get effected by h202 so don't freak out about it.

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Mr X thanks for the advi feel better now knowing I can use h2o2 up untill harvest with no harm to my trichomes.
One more question tho, besdides spraying plants with h2o2 would it help to soak the soil with that solution with my next watering and then after that continue feeding as normal?

uniquecreations said:

Mr X thanks for the advi feel better now knowing I can use h2o2 up untill harvest with no harm to my trichomes.
One more question tho, besdides spraying plants with h2o2 would it help to soak the soil with that solution with my next watering and then after that continue feeding as normal?

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yeah that's fine too.

Southern Ag Garden Friendly Fungicide is a much better preventative for PM on plants than H2O2 is. I'd reserve the H2O2 for cleaning your environment. I have no proof, however anecdotally H2O2 seems to affect terps and flavor when used on buds.

Spraying just spreads it,dripping from one leaf to another.
Ive tried 29% h202 at 15ml/litre.Killed the leaf but not wpm.Good luck.

PJ Diaz said:

Southern Ag Garden Friendly Fungicide is a much better preventative for PM on plants than H2O2 is. I'd reserve the H2O2 for cleaning your environment. I have no proof, however anecdotally H2O2 seems to affect terps and flavor when used on buds.

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Mr X and a few others told me there's nothing to worry about that it is going to affect my buds ,I have been spraying it for the past 10 days with h2o2 , and for me , it is killing the spores , and I am keeping it under control but it just seems it always find it's way back. You can even watch Jorge Servantes on yt where he's literally washing his buds in h2o2 before drying , and says it won't affect the buds in any way.

IMO the most important thing to fix is the environment that is causing the problem. Heathy plants and a good environment will help keep PM under control and if that doesn't do it then focus on strains that are more resistant to PM.