I mean u dont have it anymore. So it can be eradicated. Means and methods vary. But it can be eradicated.
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It’s not eradicated if it’s comes back within a week or a few months just takes that long to fester.
Eradication is when I had it as bad as I did and I did what I did and haven’t seen it for over 4-5 years now.
Now thats eradication.
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So you eradicated it
Lol wtf
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Yeah but I told you what I had to go thru and it costed me.
Reread your pm
I’m scrapping everything. Everything. It’s just a hobby for me too. I can’t handle another 4 weeks of “managing” this in my flower tent. Every day I come back to check there’s a little bit more. Still hasn’t showed up on leaf tops but the black light shows the shit creeping up stems, under leaves, it’s insidious.
It was all over the lower stems of my Agent Orange seed run tent even though I was spraying preventatives regularly, so that project has been scrapped as well.
My last stand is the clone quarantine tent. It’s had sulfur spray two weeks apart now. I can’t find anything using the black light but still, they all had it at one point. I’m going to sleep on it but then likely scrap everything in there as well. Bleach all the tents down. Wait a couple weeks and start from seed again.
I’ve been growing in this spot for 7 years and never had PM. I hope to god that after this break an deep clean it doesn’t come back. And if it does, time to find another hobby lol. I should have known taking in all these cuts was going to end up bad. Seeds never did me wrong.
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I’m actually just repeating the method through which I eliminated powdery mildew 20 years ago on advice of my weed dealer and it worked I got rid of it forever. And it’s worked on other people’s plants as well. So, if it can’t eliminate powdery mildew like I said then how do you explain that? Also, like I said to my weed dealer “that’s really easy to try!” and never looked back.
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Spores and air intake. If only conidia are present, they probably won’t survive very long. If there are ascospores, they will be more durable. Ascospores are generally not produced on Cannabis (only one or two reports in the literature). They could be coming in from outside.
One thing about sulfer, is you cannot use it within 2 weeks of oil products and never use it during flowering. Which, suffoil x and neem oils are effective against PM too.
I am attracted to the ideas using UV light or transient heat treatments. There are industrial UV air and water treatment devices that are used in mainstream agriculture.
Zinnias will host G. ambrosiae
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I read all your posts here on the forums, wow they are so informative! Thanks!!
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Im going to install a UV light in the duct work I use to scrub the air being that im going sealed room when I make my return. Also new carbon filter and fan.
My fan is 10 years old and due for a replacement.
I have some DIY lights i made not sure how Imma going to clean them. They are bridgelux strips
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I get that people would rather not use a fungicide if they can help it, last resort type of thing, but you’d really rather quit growing entirely than use a fungicide?
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I had pm starting on a plant in veg and I sprayed it with a copper solution. It advised 2 applications 1 week apart, I believe it was copper sulfate but not sure. I will check the bottle when I get home.
It worked, the pm didnt spread to other plants, and totally disappeared.
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No just thinking desperate thoughts. I’d probably drink fungicide before I ever quit growing.
I’ve got some large teens in the clone tent that could be put into flowering soon. This is the tent that has received two sulfur sprays now. I haven’t been able to spot anything with my black light. Instead of just trashing them with everything else, I want to see if the sulfur really did knock it out. A fun little test to add to this thread. It might set me back yet another month if it doesn’t work but let’s give it a go!
I’m going to bleach down the other empty tents now. Give it a week, and throw these sulfer clones in to see what’s up. Kind of have the feeling I’ll be back with PM but I sure hope not.
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it’s called bordeax solution and it works great it’s copper two sulfate. Thanks!
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if you did the mildew protocol with the sulfur, it’s fucking dead meat. Just make sure there’s no plant material laying around that you didn’t spray. Can’t let the fucker have a toehold.
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It’s beatable, you got this. Anything living can be killed.
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That’s my concern. The sulfur spray gets the leaves covered real good top and bottom but I’m not so confident about the stems, and that’s the first place I always see it crop up is on the stems and where the stem meets the fan leaf. So I’ve been going the extra mile to actually dust the sulfur all up and down the stem and branches. I’ve got a legit Bubba Kush clone that I’d be sad to lose, and I’ve been dusting that one almost every day.
But if I didn’t have the blacklight I’ be helpless. The sulfur dust looks almost exactly like PM spots.
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Just read this entire thread top to bottom and wanted to share my experiences. I did a clone trade locally and got one with pm. I should have drowned, burned or buried, but I didnt think pm inside was a big deal as I could easily modify my environment. Big mistake. Cut off the visibly infected leaves and discarded immediately, then left it under a fluorescent outside of my tent for a week and did not see any regrowth of the pm. Then moved it into my tent and 1 week later almost all of my plants had it. After this I tried:
-spacing plants apart more
-increasing in tent circulation
-lowering humidity to below 50% night and day
-introducing a heater at lights out to prevent humidity and temp spikes
-increasing outflow of air
-increasing temperatures to above 95°F day and night
-spraying potassium carbonate
-spraying undiluted 3% hydrogen peroxide
-praying to the gods
-waiting patiently between attempts
None of this did anything more then suppress the pm for a week or so (sprays only) and most did absolutely nothing (spacing, humidity, circulation, temperature)
I spent 4 months altogether stuck in veg trying to figure this out. I was going to do a sulfur burn on the equipment and spray with sulfur as well, but then had read from several peoples’ accounts of trying the sulfur methods and still having the pm come back. I also read a study that claimed (I believe) that the mycelial network lives below the leaf surface and that just the reproductive aspects were formed above the leaf surface, and that in this sense it is not “systemic” but explains how it can be treated at surface level and appear to be gone only to come back 2 weeks later. Other explanation is that it is reforming from spores. Now, I need to do more research on this topic and read more studies to make any claims to this degree, but the same study claimed that the pm on cannabis is species specific, and made a very big deal about this supposedly newly known “fact” I’ll try to see if I can find this study. I did not want to hear this info, but came to the conclusion that the only guaranteed way to cure a pm infection is therefore with systemic fungicides and a total environmental clean up for spores. I didnt want to be inhaling cyanide and the many other breakdowns of eagle 20, and I get an upper respiratory infection every time I smoke pm weed as well. I also was told by my landlord that the house insurance person was going to be coming by to do a full house inspection and live in a downstairs flat of a house. So sulfur burning would stink too much and after 4 months of fighting it I gave up and moved all my plants outdoors for a dedicated seed run. Going to sterilize my equipment and start over from seed only. I may now try treating my plants outdoors with sulfur spray, but my main strategy will be to spot spray plants with 3% h202 as I see it emerge, and get a uv light to check at night times.
ALSO food for thought, if you are bringing bud to smoke into your house and the bud had pm, that is another way of introducing pm spores into your house and possibly grow.
Good luck to everyone, and I just want to say not to take this issue lightly or think it is easily fixable. This may be true for some people, but imo it is better to treat it with extreme prejudice and not accept any clones remotely near to your grow until minimum 2 weeks quarantine has passed.
Good luck everyone! You’re probably not on this page for shits and giggles! Dont give up!
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There’s plenty of fungicides available besides E20. I understand folks’ reservations about that particular one, but there’s a dozen other highly effective ones available to anyone in the USA.
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I am in Canada, but I would love to hear your two cents about other systemic fungicides with potentially less dangers!
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I would also like to know of a Canadian available fungicide that will take the worry out of PM.
Everything I see is in the US
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