PM is endogenous to the environment… it is in the air. Outdoor crops need to be PM resistant or have a rigorous IPM strategy applied. Indoors, even with procedures and policies in place to maintain a clean environment, an employee touching/smoking infected nuggs can infect a whole grow.
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Yikes! Didn’t even think of the employee/people aspect. But that’s definitely a good one when having multiple people walking around, touching things. I’m bad for not putting my gloves on tbch, like real bad. But I’m for the most part a clean freak so that helps, plus when entering a big room/tent I actually wear a Tyvek suit and booties. But I gotta remember the damn gloves! Writing it on the white board as we speak in fact!
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That’s my tyvek suit, I have a few but these ones last forever as they are stitched better, taped over etc. and the bottom pic is my booties , I buy them by the 100 pack. Overkill, perhaps, nah definitely but for my OCD mindset this helps significantly. And works , just routines, practices we build over time.
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Oh @herojuana.tom, surely you didn’t expect me to think anyone here is going to “believe” me. This is cutting edge, where I make observations that allow me to wipe a colony out. I will say many startling things, don’t worry about that. I will also take photos with my microscope to show the observations. Give me a sec, I’ll post my story, it’s really something.
ok, so I am a farmer. Not a huge farm! Just a nice organic farm where we grow all sorts of vegetables. It’s the old family farm and I have been around it my entire life.
I was always the pumpkin grower! From age 6, there is a picture of me with a stack of pumpkins I grew in the compost pile. I think I’m 45 now or something like that. 30 years of pumpkin growing and no mildew. Same with all the other crops in the garden and green house, no mildew. I grew cannabis plants outside, and no mildew. Probably 10 years ago, someone brought the mildew. I can probably guess and most likely be right about where it came from. A plant my mom brought in from the nursery or farmers market.
So we have mildew for a decade, and then I wiped it out. I studied the spread, and the hosts it lived on. Once I had determined the likely scenario, I went in there and sulfured the colony and wiped it out. Now I am growing mildew free again. On the pumpkins, I mean. My next target is the mildew on the peas. If you stick around, I will do a complete study on it’s life, then exterminate the colony. I don’t demand you believe it, but keep an open mind.
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Its all good, Joe. You won’t see me answering any highly-specific and soundly-reasoned multiple-point answers with an overarching “no” without providing reasoning nor providing specifics on which of the multiple points that were made that I have an opinion which differs therefrom; I would hope respondents could provide the same diligence in their replies as language is ambiguous and throwing a blanket answer stating a post is incorrect when it is absolutely correct in every aspect does throw a bit of a question over the respondents judgement and undermines any sort of standing that may have previously been achieved. AQ10 works. Oil works. Sulfur works (but can’t be used on flowers), altering the surface ph using bicarbonate or acid works, not one thing I posted was incorrect. Your response that my highly detailed explanarion of valid methods was incorrect implies a major lack of understanding of basic IPM methodologies and the PM lifecycle. Not trying to be a jerk, but that is how things work…Analogously, If I had explained in detail many proofs of how the world was round and you answered with a singular resounding no that my post was incorrect because you see the world is flat you would lose a lot of credibility. I am here to add to the conversation and help raise peoples awareness so they can learn and grow. Thank you for your consideration.
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Lol. I have an extremely open mind. Many people say it is often too open; If you perceive otherwise you may have personal blockers as I have done nothing but add working knowledge to the conversation and you have done nothing but refute truths and act defensively. I don’t care about you or your exploits with pumpkins, especially as the thread was started with the observation that none of the online techniques specifically studied cannabis PM so those results would be regressions back to the online techniques. I won’t add any more posts to this thread since you already know everything yourself. 
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I’ve been lucky so far, but I treat with neem through veg. Seems to work.
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ok start your own thread about using peroxide and baking soda on mildew. I’m not stopping you. Meanwhile I’ll be over here on the cutting edge. Stop by some time as it progresses!
Do you actually have mildew colonies growing that you’ve seen?
Before anyone even says it, I know… I know, people will all claim you can’t get rid of powdery mildew. I read so many university studies from agriculture departments saying it. Endless. The thing about that is… I always do my own homework. I like the studies, and reading them. I don’t hang my hat on their conclusions, though. Instead of reading their study and thinking it was all good, I go out and perform my own study. Then I use everything I’ve learned to hatch an eradication scheme. I will lay that scheme out for everyone to enjoy, and you can try it yourself. It’ll take some getting used to the methods, but if you care to learn them, you too can eradicate any mildew colony you want.
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No, I just use it as a preventative measure. Like I said I’ve been lucky so far.
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heh heh yah I have to positively identify the pathogen and nuke it, I never actually do an IPM or rely on luck. It’s more of a science to me!
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It’s harvest or starve over here lol.
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I hear that brother, that’s why I’m growing clean room style. If there is a crop failure, life is not good.
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Rollin’ the dice… at least you’ll know what to do when it comes up craps, lol!
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heh heh, so here’s a startling story right? It gets nutty! So the mildew is coming back each year. Except in the eradication phase I sprayed all plant material including bits on the ground from last year, but I left one butternut plant untreated. So there were probably 2 dozen squash type plants. Pumpkins, butternuts, kabochas zuchinni? so on. With a single untreated plant over there in the corner. Not only did the mildew not grow on the untreated plant, it also never grew on the treated ones. The only answer for that story, is that it overwinters on bits of the plant. Or at least, somewhere really close to the bits of plant on the ground. Flowers from the old crops were just laying there right where we planted the new crops.
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What am I missing, Joe? Everything I’ve read says it winters over in the old plant parts, mulch, detritus. Are you just easily startled? I know I’m spraying sulfur where we grew squash last year, and where we’re going to grow it this year. I wonder if it will keep squash bugs and squash lady beetles at bay?
Of course it was a nutty story, there were butternut squash involved 
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lol, no, I know it’s was just a funny! The startling part was actually how easy it bit the dust after I sprayed around. Everyone had given up including the farm down the road has it and lots of people in town. I tell you, my pops was definitely startled when he realized we grew a mildew free crop for the first time. He had just been down the road to the farm there and saw their infested squash plants, then come back to our fields and greenhouse… was blown away. Thought that shit was forever.
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PM doesn’t really effect our peas, squash or pumpkins enough to be a problem, but I’d still rather not have it.
The Verbenas, and zinnias do look awful with it, and I really like them 
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