Powdery Mildew Permanent Cure?

As far as my limited research goes Powdery Mildew seems to be systemic. I made the mistake of partnering with someone and now all my mothers had PM. they've given cuts back to me but is this just a ticking time bomb waiting to pop out again as soon as the conditions are not favorable? I've had 2 flower runs get ruined because of this crap and have cleaned everything to start over.

Are my genetics just fucked? Has anyone found an actual cure or method that can kill it in veg and it not come back? I've heard TC can clean HLVd so maybe something like that? I've used many sprays and they all do the same crap which is hold it at bay for a little while. I read on quest website that Eagle 20 can work but screw that cancerous shit.

I was dealing with pm I got from some clones for a couple grows. I tried a bunch of fungicides but every time I would spray it it would come back in a couple days. My rh and temps were great too, never let them swing that much. The only fungicide that actually worked was wettable sulphur. I sprayed it on all the infected vegging plants 3-4 times in the span of two weeks and it totally disappeared. It's been about 18 months now and it still hasn't come back.

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I've tried everything I read about: sulfur vaporization, H2O2, reactive oxygen species, dr zymes eliminator - I still get PM in flower around week 6 - 7 of flower.

The stuff is heartbreaking but Dr Zymes Eliminator makes an effective post harvest bath.

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Regalia is supposed to help. I threw everything out in the room that had pm and used an ozone generator on everything else in the room (fans, dehumidifier, ac, etc running) you could try h2o2 dunks if they're small enough. Same thing happened to me with a partner taking my plants but I tossed my genetics after fighting it a couple times. Haven't had it come back in a year though so it was definitely environmental on his end

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Thanks Gemtree, I forgot about Regalia.

Used it last grow and still got trace amounts of pm - it's like all the things I'm using together are keeping the pm in check, but not eliminating it.

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There is no permanent cure as the spores are in the air everywhere and given the right conditions they will colonize. You can do prevent a favorable environment for it to take hold and multiply. I've never had it indoors but I have had it on outdoor plants. Last year I used a spray of potassium silicate in my garden and on the outdoor plants I grew. I didn't get it on my outdoor plants and it was the first year I didn't get some PM on my squash, cucumber, pumpkins, and roses. The potassium silicate changes the pH on the surface of the plant preventing the PM from being able to colonize.

Over the years I've used numerous commercial products that are used specifically for treating PM but none of them worked as well as just a simple foliar spray of potassium silicate solution. For around $10 a pound you can make over 1000 gallons of spray.

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Xtsho where do you buy potassium silicate?

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I use potassium bicarbonate, silica and castile soap. And don't have issues either. If there are any pests, I add isopropyl alcohol and it takes care of them too.

Hobbes said:

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Xtsho where do you buy potassium silicate?

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You can get it on Amazon but I got mine from Custom Hydro. And like everything else these days the price has gone up. It's now $18 and Custom Hydro's shipping costs these days are just ridiculous.

JimmiP said:

I use potassium bicarbonate, silica and castile soap. And don't have issues either. If there are any pests, I add isopropyl alcohol and it takes care of them too.

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I also spray everything (strawberries, squash, zucchini, raspberries, walls, screens, everything! ) in and around of the hoop house.

Another thing that I should add is this is not a one and done type of thing. I spray at least once a week in the hoop house and a couple times around it. Then also again after any rain.

Do you spray both the top and bottom of the leaves?

I spray everything. Top and bottom, stems and stalks. And yes, I spray it in flower too. I use the alcohol at less than 35% so before anyone chimes in about the safety of the trichomes, it doesn't damage them.

JimmiP said:

I also spray everything (strawberries, squash, zucchini, raspberries, walls, screens, everything! ) in and around of the hoop house.

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Last year I was doing the entire yard weekly using a 2 gallon pump sprayer. I think I'm going to get a 4 gallon backpack sprayer since I'm spraying a lot of stuff these days. That would leave me with a free hand to hold my beer.

JimmiP said:

I spray everything. Top and bottom, stems and stalks. And yes, I spray it in flower too. I use the alcohol at less than 35% so before anyone chimes in about the safety of the trichomes, it doesn't damage them.

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And what you're spraying is also Bee Safe. That's a priority for me. If it is harmful to bees I won't spray it in my yard.

When I see PM I just toss the plant now. It always comes back in my cases I’ve had it.

Only ever had it in the nursery, never in flower. Easier to just to toss it in my position.

nc208 said:

As far as my limited research goes Powdery Mildew seems to be systemic. I made the mistake of partnering with someone and now all my mothers had PM. they've given cuts back to me but is this just a ticking time bomb waiting to pop out again as soon as the conditions are not favorable? I've had 2 flower runs get ruined because of this crap and have cleaned everything to start over.

Are my genetics just fucked? Has anyone found an actual cure or method that can kill it in veg and it not come back? I've heard TC can clean HLVd so maybe something like that? I've used many sprays and they all do the same crap which is hold it at bay for a little while. I read on quest website that Eagle 20 can work but screw that cancerous shit.

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I think so too, read a lot, scoped tons.......how do you explain that whiteish film/compromised mycellium if no contact with contaminated leaves. Not a real popular theory, have only read one scientific article, that also has this view.
You want to kill It? Get "Banish fungicide.(geranium oil extract from Europe. My last run....there it is ,PM. Plants pretty youg..,,,hit them with Banish twice...,problem gone. I've tried all the home remedies.....they suck, waste of time, Banish is differenent because it kiils, eliminates the "hook pm sinks into mycellium, all the others, that I know are preventative. BANISH CHANGED THE BALL GAME. Besides, I worked in environmental testing from here to Panto Pago...EPA, state reg, agencies,biologist,chemists.......no big whoop, but I do know what some ignorant(Not stupid) people hose their weed down with.......yikes. .".I'll pass on that doobie, but thanks" . These products lack lots of info.......,....,,,,ingredients, products of combustion, carcinogenic potential etc. BANISH looks very safe and it works great....can even spray on flowers if that far along.GREAT Poat....,I've always had my suspicions about being systemic. Ya make me feel more confident with my view.

Thanks everyone for all your responses. A lot of great info here for sure. A lot of info points to it not being systemic but I've seen a lot of folks go to insane lengths only for it to keep popping up. I found Quest had a ton of great knowledge for folks to read. I've found some folks swear by one product while others refute their success so I'm confused as to find a clear good product to effectively use in Veg.

xtsho said:

Last year I was doing the entire yard weekly using a 2 gallon pump sprayer. I think I'm going to get a 4 gallon backpack sprayer since I'm spraying a lot of stuff these days. That would leave me with a free hand to hold my beer.

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Just saw a 15 gal sprayer cheap was thinking of mounting to a wagon , should get the whole rack on it lol thanks for that potassium silicate tip btw

Last four years outdoor no matter what I sprayed the property was covered in pm
All squash and various garden plants were loaded
This year no rain and not a spot of PM even on the PM leader Lilacs

I am sure every type of grower would love a permanent solution but once again Mother Nature rules