The Truth About Cannabis Powdery Mildew & Growing: Can You Really Clean It Up? Dude Grows Show 1,460



In this video, we delve into the truth about powdery mildew on plants and answer the age-old question: can you really clean it up?

27 Comments

  1. Dude is so sick of doing the show with Scotty that’s the only reason grambo is around. He’s the Jim Norton of this opie and Anthony combo

  2. I had mildew that wouldn't go away, all throughout basically every plant. Put them in a closed up greenhouse, and it got up to probably 120-130F (maybe even hotter.) It knocked back the mildew and eventually killed it off entirely. Downside is that the heat turned the buds really skinny.

  3. Hydrogen peroxide. Be sure to dilute to an appropriate level, but it's gonna be you're safest bet. 3% is way too strong bro. What you want is a weaker dilution where you physically rinse the buds clean. You're not gonna get rid of everything on the first rinse, but done properly, you will notice a significant difference to remove the bulk of the infestation. The other thing to pay close attention to is what time of day to do this. Some people like to wait until the lights go off, to slow down the oxidation process, hoping to maximize the hydrogen peroxide's effect. However, considering once the excess oxygen leaves the solution, what's left is just H2O, which actually provides ideal conditions for the spores to inoculate. Thus, we have to outsmart the mildew, by understanding how and why it spreads.

    Not all strains of powdery mildew are the same, but most tend to prefer dry conditions during the day, and more humid conditions during the night. Additionally, many varieties of powdery mildew do not fair very well in temperatures above 85 degrees. Technically, this makes it rather easy to treat powdery mildew during a veg cycles, as opposed to during flower. Theoretically, if you keep your lights on 24 hours a day, the spores never really get an opportunity to inoculate, so long as the canopy is not too thick to prevent light from penetrating deep enough into the lower regions and/or the plant has large bunches of leave on leave action sweating out on points of contact. In veg, the plants don't mind the higher humidity and temps at all. Not to mention, UV light has significant potentials itself to kill spores, which makes treating in veg far more ideal than waiting until mid or late flower. Yet, that is not always an option, and I know the stress that follows all to well. However, over the years, learning more along the way, it becomes a lot less stressful with proper technique.

    Indoor and outdoor have to be approached slightly different, but the basic concept remains the same. First, be careful not to spray in direct sunlight, because the water droplets will intensify the UV rays, which has potential to do damage to the plant. This same basic principle also applies to become extremely beneficial to know when it comes to treating for powdery mildew. UV is already destructive to most powdery mildew spores. Intensifying this effect, while causing the hydrogen peroxide dilution to oxidize much faster, the water droplets will intensify the UV rays, providing an additional method of treatment, merely by applying the right mindset, at little to k[no]w cost. "But won't this fry my cannabis plants??", you ask!? Does anyone remember how those things called "trichomes" actually act like a sunscreen to protect the plant against this very real everyday threat that most certainly exists in Nature? Just be careful not to spray in DIRECT sunlight, but it helps to have the light, as long as it is not too intense, for all intensive purposes here.

    If growing outdoors, it's ideal to spray early, before the sun gets too high up in the sky. Luckily, during these later months of the year, the sun is already at a lower point in the sky, depending upon the regional latitude, but typically this would be the effects of the fall. So, early morning before the sun gets too high in the sky, so that after the oxidation occurs the plants are not left around all night with a bunch of water and leftover mildew spores on their leaves, ready to start the cycle all over again the next day. Yes, it is totally possible to spray the plants out doors later in the day, as long as they get enough light to kill some spores and dry their leaves completely before the night cycle occurs. It helps to have a decent amount of air circulation. So try not to do this on a more stagnant day. Partly cloudy days also have benefits, where the plants can be treated under cover of cloud, with intermittent intervals of sunlight adding to the beneficial effects. One of the benefits of treating with hydrogen peroxide, it can be used after a rain, to hit any known potentially hazardous spots, before there's enough time for the spores to repopulate, but AFTER the rain already rinsed the majority off. Meaning you don't need to spray as much, because the bulk has been naturally cleansed, by rain water that often will naturally be accompanied by trace amounts of hydrogen peroxide, as the water droplets tend to carry tiny amounts of additional oxygen molecules from the upper atmosphere as they fall from the sky. Bonus!!

    Indoors it's way more boring. Ideally, it would be better to treat right before the lights come on, and maybe start em off on a lower setting, if possible, when there is still a little bit of moisture on the leaves, to get the added effects. Helps to have lights that emit decent amounts of UV, or at least enough to aid in the destruction of spores. Ultimately, you just don't want to leave your plants in the dark for extended periods of time with a bunch of hydrogen peroxide dilutions that will eventually oxidize, leaving water behind, thereby aiding and abetting in the inoculation of the next generation of mildew spores. The powdery mildew does not like higher humidity in the daytime. Although not ideal for flower cycle, leaving a bit of excess moisture in the air after a treatment will inhibit the spread of mildew spores, helping keep any potential further outbreaks contained. If the air is too dry during the day, one thing to be mindful of, this is how the powdery mildew spreads, as the spores dry up, they become easier to fly away in the wind, causing whole new outbreaks to occur. So, although you'll need the airflow, to help dry the plants after treatment, if there's a ton of mildew spores in the air, be cautiously mindful about how you control and direct fans, to help make sure things don't get worse before they get better. Also good to know, lowering the humidity during the night cycle, if possible, will help tremendously to inhibit the growth.

    In conclusion, be smarter than the mildew itself, and you got this 😉 Clean, quality cannabis FTW

  4. Take the wrong pill these days these kids are dying. Man I had a coworker I grow copious amounts of the chebba so it goes without saying my staff does not have to buy cannabis I found out one of the ladies I give more cannabis, too than anybody else was giving it to her grandson. He was a 16yr old monster the kid was a little hipper monster. They tried everything to help this kid he tells his grandma when he smokes with his friends he does better the only class he was passing was right after lunch no 1 could figure out why he’s getting an A in that class but E’s in everything else. It was the weed so now the kid is off all the pills he is medicated with a pen & he’s got all A’s&B’s I still don’t like them giving him weed but it’s working

  5. I used to just cut out anything if I saw powdery mildew, just cut it & that for many years I live in Michigan very humid about two years ago I found a product by Humboldt secrets, flower shield. I don’t care what anyone says. It is the absolute best product on the market for powdery mildew. It is also the only product that I have ever been able to use in late late flower. I have used it two weeks before harvest. I’ve used it 10 days before harvest. It works on powdery mildew, fungus, gnats, mites, aphids, Millie bugs, which I’ve never gotten until this year the Millie bug I don’t know if they’re spelling it correctly. I’m using talk and text but flower shield works it is/ it has a steep price. it is worth every freaking penny and it’s all organic. There is a lot of washes and a bunch of different stuff like that out. People can use. The best thing I ever did was buy a really good dehumidifier.

  6. love your show….first time poster here from legal Maine….have you ever used an Ozone generator to kill PM….not a UV light…but a stand alone ozone generator….that can get into every crack?

  7. I find it odd that so many are deathky scared of pm, but they smoke weed grown with chemical fertilizers.
    I grow organically, have tasty results, and control/remedy pm with Neem oil, even in flower. As long as you are 3 weeks from harvest, it has time to "wear off". ALTHOUGH, neem oil is safe for human consumption (unless you have an allergy to it) it has been shown to even have health benefits fighting diseases.
    Neem oil is a MUST for your gardening toolbox. It works.
    Would I smoke pm? No. Would I trim the bad and smoke the rest? Yes. I have without issue.
    PM OCCURS NATURALLY, ITS IN THE AIR. THIS IS NOT TOXIC. Thats like saying black mold will kill you. These are naturally occurring substances….i guess if you live inside in a pure air environment, it could hurt you. I live in the woods, there is mold, moldew, and fungus everywhere. ITS FUCKING NAUTRAL, just control an outbreak by trimming and treating with NEEM OIL. Oldschool still works, chemicals are what make you sick. Where do you think Cancer comes from? Come on people….

  8. From my experience dealing with PM outdoors, it’s more an indication than a problem itself. Its one of those things that’s always around, and the plant can fight it if it’s strong enough. So it’s usually due to one of the other parameters being off.

    Don’t worry about what caused it. Just find out why the plant isn’t strong. Also add ipm.

  9. Take the wrong pill these days and yeah you can wind up dead. Truer words have rarely been spoken. A friend of mine was in incredible pain and by no means was a pill user. His girlfriend procured what was thought to be oxycodone but was fentanyl He was was without a pulse within minutes of swallowing it. I wouldn't trust a single pill that's not directly from the pharmacy. These cartels don't give a fuck about anything or anyone They are true scum bags

  10. I heard that milk and water mixture can reduce powdery mildew. Not sure if it’s true or not but it’s got to be better than nothing gotta be better than spraying anything but yeah I heard like 70% water 30% milk is a good ratio. Love you guys keep up the good work you do.

Leave a Reply

Your email address will not be published.


*