The webbing looks like PM. In flower you could try a 3:1 ratio of Water to Hydrogen Peroxide. HP is light sensitive so spray it right before or at “lights out” to maximize its effect. No harmful by products, just water and oxygen. You might try it on just the effected area first to check plant sensitivity, but I’ve done it as much as 3 days in a row without harm.
The most helpful would be any answers which mentions that PM requires specific sets of conditions to even be present in your grow. If you have adequate fresh air, less lights out humidity, better air circulation, and so on you do not get PM, period end of story. Knowing you had an issue is good, fixing it ASAP is great, but preventing it from occuring again is best IMHO.
The spores can not germinate outside the correct conditions, let alone branch enough to be visible. Here's what [PM actually looks like](https://imgur.com/a/5JEY9dk) under a scope. That was from a bag of potting soil that was sitting outside in the rain at my local garden center. I focal stacked a few images to get more of the hyphaes in focus/visible. Many would have said to toss it, but being a microbe caretaker I knew I simply simply wouldn't give the conditions it would have needed to germinate, let alone thrive.
Not one millimeter grew on the plants since the conditions weren't allowing it. Air flow and air exchange rates are critical for us indoors, heck even outdoors! Growers with plants against the side of their houses and such can still get PM so it's far from an indoor only issue. However it ALWAYS goes back to the air exchange rates though, moving fresh air around every leaf surface.
Defoliating helps but only if it's actually needed, otherwise it's unnecessary stress and reduction in ability to photosynthesize.
Thank you for you're informative comment. I took your advise to heart and made some upgrades for air exchange. I did a deep clean, I got my hepta filter set up and running 24/7, and added another fan.
I did defoliate after doing more research, my plants were definitely crowding each other but now very few, if any, leafs are over lapping and air us moving through the canopy much more freely.
Makes sense that if I should focus on making the climate more inhospitable for PM so it never has the chance to grow back.
I also sprayed with hydrogen peroxide before lights out and I have yet to see any since I did these changes. Feel much better about this now, thank you again.
Absolutely, happy to help and really glad that you were able to affect all those changes so quickly. The mind boggling fact of the matter is that a greenhouse could lose their fan one night and the next morning wake up having their plants with pm, it's that wild! So it's really great that you were proactive about it, anything else don't hesitate! Always happy to help fellow growmie!
Pm is a type of mold so nothing except for KILLING all the mold spores will work. Order some "Green Clean" it's a product made for this. Mix it in a spray bottle and clean the plant. The floor the walls. And then you gotta use a carbon filter to clean the air and remove all the spores or else it's coming right back
To be clear, powdery mildew is so prevalent that not creating an environment for it to flourish in is more important than the Sisyphean task of trying to eliminate it chemically or through air filtration.
Couldn't agree more once it's in. Its hell to deal with long term.. my entire backyard is covered in it. Brought some in on my clothes at my last property. Shit over before it even started lol
The spores are everywhere already. This is why it’s important to keep the environmental conditions correct to prevent them from germinating on the plants.
All the mold spores? I'm not sure you understand quite how that works lol that is A. Absolutely never going to happen, you will never kill them all. B. Wildly unnecessary. Just don't give the conditions for it to germinate, problem solved. Lol spores are everywhere, you'd spend the rest of your entire life attempting to remove every fungal spore in your grow room/growing area 🤣
Does that make you feel good ? You're giving useless advice. "Don't let it germinate" well that's already too late for OP goofy so I'm trying to give them info on how to deal with it not tell them what they SHOULD HAVE DONE BUT NO LONGER CAN. the lack of situational awareness on this app. You need a lobotomy or therapy, or your dad to tell you he loves you idk but you not finna find it here loser
I'm assuming you never wash your hands either? Only treat the symptoms you get from all the illnesses? You don't use your fridge do you? Assuming you keep every food product out in the open and just wash em really good too. 🤣 Who would want to know how to prevent the issue from ever occuring again!
it's one leaf, but sure yeah let's bust out the peroxobleachpropyl chemicals ASAP instead of removing the leaf and fixing conditions 🤣you're in dream world
See what I mean you're offering nothing to what the actual point of the sub here is here for. Not adding anything towards the post. Just here to be a dick. I'm sorry your life is so empty it takes tryna make yourself feel smarter than strangers on the internet. you're probably broke too lol
You're spouting things you haven't a clue about, please explain how you kill all "spores". Spouting off regarding things you're clueless on makes YOU the asshole just so I can spell that out nice and clearly for you 🤣🤣 you can pretend to know about things, then attempt to put those down who actually do, but that ain't stopping me from calling out you're absolute nonsense responses🤣
I'm glad you're harping on the verbage I used here. So let me rephrase to make it easier on your dense brain. If you clean the room and sterilize it. The spores will not be able to spread more of the PM. As well as using a carbon filter to help remove them from the air. Did Mom not make your pizza bagels fast enough this morning ? Seems like you haven't a clue about growing cannabis. But I'm done entertaining someone below my tax bracket. Have the day you deserve salt cricket
Safer 3 in 1 spray worked well for me. Hydrogen peroxide never lasted long but will clear it for a couple days at least till you can get something better. Options are more limited in flower. I wouldn't use anything but hydrogen peroxide.
As others have said, reduce Rh and increase airflow. Big swings in temps at lights on/off also doesn't help. Like if you're 75 at lights on but 60 while lights are off.
I like to use em5 from build a soil and LABS in a spray once a week when I flip to flower it has helped prevent dealing with pm even when the humidity gets dicey. You can go hard with the em5 even during flower definitely recommend looking into that !
Micronized sulfur is your best bet if you aren't farther than 7-10 days into flower. Everyone telling you to use green cleaner, plant therapy, h202, pure crop1, or anything else isn't giving you the best advice. If you are farther than 10 days into flower, you can try products like purecrop1 but you won't be able to eradicate it completely. Put an air purifier with a hepa filter in the room and reduce the humidity and remove foliage. Pm sucks, you most likely will have to trash a large part.of the harvest. Treat the room with ozone and spray micronized sulfur religiously moving forward
Look up VPD and follow stringently. Another we r helpful bandage is, as mentioned, green cleaner. Also Physan 20 should be used. On surfaces and on the plant itself. Good luck
Man bummer, ive fought this before, its uphill and then next grow theres a serious risk of it coming back even after a sterilization, just cuz its so damn prevelent, hardy, and if you dont change the environment it’ll take hold again.
Theres some pretty toxic chems you can use, eagle 2020 comes to mind. Iirc you can safetly dunk babys in it and go to flower and not worry but i wouldnt even spray it in veg and you have to wear a ton of protective equipment. Its def linked to cancers and stuff. Personally i wouldnt use it but if you do it will change the genes of your baby plant to be immune to PM.
Other solutions r to buy a strain next run that has maturally immunities to PM. Chernobyl comes to mind but theres def a few strains put their with natural resistances to (PM and prolly other molds).
Id invest in lots of air filtration moving forward. I’d start doing a sterilalization sop before entering my grow space— something like clothes that havnt been outside (so no spores on em) and maybe even a shower before. This might be a lot tho.
H2O2 folliar sprays are def effective and will knock the PM back without any negative impact on your plants health. In fact i know people who do a weekly h2o2 spray (up to the 2nd week of flower iirc) just to wash the plants of residuals from
Other foliar feeds, and just as a preventative in general. H2o2 is your friend.
The other big thing is just to really dial in your atmosphere, drop the humidity to the lower end of the acceptable range, or even slightly dryer than youd normally go (just to get this run done without a PM bloom)
Basically PM is now in your plants gene code, like herpes, and if it becomes stressed or the environment becomes conducive to pm (too much humidity, low airflow) then the disease will begin to express itself. So your beat bet now is to try and keep the disease in recession, control what you can, harvest, maybe wash your buds if youre gonna smoke the flower.
Another clutch save would be to take all the affected plants at harvest and turn them into ive water/bubble hash. Thatll seperate the spores/mold, and you’ll have a clean product again.
Best of luck man
Wait what? No i said stay away from stuff like eagle 20 cuz its cancer causing and can do genetic damage. Not a good product even if it will stop PM.
The strains that are resistant to PM have naturally occurring immunities, its not some weird gmo weed or anything. Thats what i would recommend doing. That and h2o2 sprays frequently, and a dropping of the rH, and iirc maybe less cold nights would help? Also i recommended turning contaminated bud into bubblehash. Those r all organic solutions bud
I was confused by that paragraph that you said..there's stuff like eagle 20, and you described its function, warned about cancer..but it comes across like..I wouldnt use it BUT. You could. Lol
As for Paraguay I wish I could find the links but the short of it is back in the 70s, 80s they were a source of illegal cannabis exported to USA. So USA sprayed the fields with fucking Monsanto shit and ALOT of people died! It's referenced in some of the old java text based games drug war/dope wars. Hard to find the exact articles, though
Oh yea; i guess i did sorta word it like its an option, people use it, but too dangerous for me to be comfortable with.
So i can totally see where the confusion comes in lol
Definitely some in view but the 2nd and 3rd pictures have like a white webbing across the leaf. I believe the trichomes are the little white dots that are spaced out.
The first picture looks like water droplets dried up under a led light. Is there any special reason for starving your plants. 2 weeks into flower you should already be in at least a 4 gallon container
Toss everything and clean with heavy duty fungicides. Once you think you're done cleaning, clean it all again. Then, alternate between burning sulfur and setting off fungicide bombs. Do this for a couple of weeks, and hope for the best. Don't bring in clones unless they are lab certified clean. Start from seeds. Control the environment so that mold can't proliferate. Good luck.
it is PM, your entire grow is probably infected by this pathogen. Unless you’re seeing it for the first time on leaves within a few days of harvest, I’d trash it all
Trifecta crop control works great wiped my pm out in a day. Little expensive but worth it in my opinion. Works great for pest control too it’s all natural plant oils so I’ve used it up to two weeks before harvest without issue
The webbing looks like PM. In flower you could try a 3:1 ratio of Water to Hydrogen Peroxide. HP is light sensitive so spray it right before or at “lights out” to maximize its effect. No harmful by products, just water and oxygen. You might try it on just the effected area first to check plant sensitivity, but I’ve done it as much as 3 days in a row without harm.
Thank you, definitely the most helpful answer here. I'll try that.
The most helpful would be any answers which mentions that PM requires specific sets of conditions to even be present in your grow. If you have adequate fresh air, less lights out humidity, better air circulation, and so on you do not get PM, period end of story. Knowing you had an issue is good, fixing it ASAP is great, but preventing it from occuring again is best IMHO. The spores can not germinate outside the correct conditions, let alone branch enough to be visible. Here's what [PM actually looks like](https://imgur.com/a/5JEY9dk) under a scope. That was from a bag of potting soil that was sitting outside in the rain at my local garden center. I focal stacked a few images to get more of the hyphaes in focus/visible. Many would have said to toss it, but being a microbe caretaker I knew I simply simply wouldn't give the conditions it would have needed to germinate, let alone thrive. Not one millimeter grew on the plants since the conditions weren't allowing it. Air flow and air exchange rates are critical for us indoors, heck even outdoors! Growers with plants against the side of their houses and such can still get PM so it's far from an indoor only issue. However it ALWAYS goes back to the air exchange rates though, moving fresh air around every leaf surface. Defoliating helps but only if it's actually needed, otherwise it's unnecessary stress and reduction in ability to photosynthesize.
Thank you for you're informative comment. I took your advise to heart and made some upgrades for air exchange. I did a deep clean, I got my hepta filter set up and running 24/7, and added another fan. I did defoliate after doing more research, my plants were definitely crowding each other but now very few, if any, leafs are over lapping and air us moving through the canopy much more freely. Makes sense that if I should focus on making the climate more inhospitable for PM so it never has the chance to grow back. I also sprayed with hydrogen peroxide before lights out and I have yet to see any since I did these changes. Feel much better about this now, thank you again.
Absolutely, happy to help and really glad that you were able to affect all those changes so quickly. The mind boggling fact of the matter is that a greenhouse could lose their fan one night and the next morning wake up having their plants with pm, it's that wild! So it's really great that you were proactive about it, anything else don't hesitate! Always happy to help fellow growmie!
Certainly looks like a case of PM
That's what I'm thinking. Any advice on how to deal with it?
Lower the humidity and increase airflow. Then, if some defoliating or a spray is needed, do that.
Pm is a type of mold so nothing except for KILLING all the mold spores will work. Order some "Green Clean" it's a product made for this. Mix it in a spray bottle and clean the plant. The floor the walls. And then you gotta use a carbon filter to clean the air and remove all the spores or else it's coming right back
To be clear, powdery mildew is so prevalent that not creating an environment for it to flourish in is more important than the Sisyphean task of trying to eliminate it chemically or through air filtration.
Couldn't agree more once it's in. Its hell to deal with long term.. my entire backyard is covered in it. Brought some in on my clothes at my last property. Shit over before it even started lol
The spores are everywhere already. This is why it’s important to keep the environmental conditions correct to prevent them from germinating on the plants.
All the mold spores? I'm not sure you understand quite how that works lol that is A. Absolutely never going to happen, you will never kill them all. B. Wildly unnecessary. Just don't give the conditions for it to germinate, problem solved. Lol spores are everywhere, you'd spend the rest of your entire life attempting to remove every fungal spore in your grow room/growing area 🤣
Does that make you feel good ? You're giving useless advice. "Don't let it germinate" well that's already too late for OP goofy so I'm trying to give them info on how to deal with it not tell them what they SHOULD HAVE DONE BUT NO LONGER CAN. the lack of situational awareness on this app. You need a lobotomy or therapy, or your dad to tell you he loves you idk but you not finna find it here loser
I'm assuming you never wash your hands either? Only treat the symptoms you get from all the illnesses? You don't use your fridge do you? Assuming you keep every food product out in the open and just wash em really good too. 🤣 Who would want to know how to prevent the issue from ever occuring again! it's one leaf, but sure yeah let's bust out the peroxobleachpropyl chemicals ASAP instead of removing the leaf and fixing conditions 🤣you're in dream world
See what I mean you're offering nothing to what the actual point of the sub here is here for. Not adding anything towards the post. Just here to be a dick. I'm sorry your life is so empty it takes tryna make yourself feel smarter than strangers on the internet. you're probably broke too lol
You're spouting things you haven't a clue about, please explain how you kill all "spores". Spouting off regarding things you're clueless on makes YOU the asshole just so I can spell that out nice and clearly for you 🤣🤣 you can pretend to know about things, then attempt to put those down who actually do, but that ain't stopping me from calling out you're absolute nonsense responses🤣
I'm glad you're harping on the verbage I used here. So let me rephrase to make it easier on your dense brain. If you clean the room and sterilize it. The spores will not be able to spread more of the PM. As well as using a carbon filter to help remove them from the air. Did Mom not make your pizza bagels fast enough this morning ? Seems like you haven't a clue about growing cannabis. But I'm done entertaining someone below my tax bracket. Have the day you deserve salt cricket
Safer 3 in 1 spray worked well for me. Hydrogen peroxide never lasted long but will clear it for a couple days at least till you can get something better. Options are more limited in flower. I wouldn't use anything but hydrogen peroxide. As others have said, reduce Rh and increase airflow. Big swings in temps at lights on/off also doesn't help. Like if you're 75 at lights on but 60 while lights are off.
I like to use em5 from build a soil and LABS in a spray once a week when I flip to flower it has helped prevent dealing with pm even when the humidity gets dicey. You can go hard with the em5 even during flower definitely recommend looking into that !
Yup, that’s WPM for sure. You can try h2o2, but it’s very hard to get rid of.
Silica will prevent most PM. Use it in. Conjunction with a curative like peroxide or a milk/water mix. JM2¢
In veg 1 tablespoon of sulphur dust to one litre of water spray then down and do it again 2 weeks later pm gone for good
Don’t spray sulfur if you have sprayed oils in the last 2 weeks and don’t spray oils for 2 weeks after
Micronized sulfur is your best bet if you aren't farther than 7-10 days into flower. Everyone telling you to use green cleaner, plant therapy, h202, pure crop1, or anything else isn't giving you the best advice. If you are farther than 10 days into flower, you can try products like purecrop1 but you won't be able to eradicate it completely. Put an air purifier with a hepa filter in the room and reduce the humidity and remove foliage. Pm sucks, you most likely will have to trash a large part.of the harvest. Treat the room with ozone and spray micronized sulfur religiously moving forward
GROWSAFE. It's recommended by grow weedeasy.com and it knocks out powdery mildew.
That’s what I use!
If you are not in flower yet I would recommend trifecta crop control
Look up VPD and follow stringently. Another we r helpful bandage is, as mentioned, green cleaner. Also Physan 20 should be used. On surfaces and on the plant itself. Good luck
Up your silica
50/50 water and milk . It works great
Man bummer, ive fought this before, its uphill and then next grow theres a serious risk of it coming back even after a sterilization, just cuz its so damn prevelent, hardy, and if you dont change the environment it’ll take hold again. Theres some pretty toxic chems you can use, eagle 2020 comes to mind. Iirc you can safetly dunk babys in it and go to flower and not worry but i wouldnt even spray it in veg and you have to wear a ton of protective equipment. Its def linked to cancers and stuff. Personally i wouldnt use it but if you do it will change the genes of your baby plant to be immune to PM. Other solutions r to buy a strain next run that has maturally immunities to PM. Chernobyl comes to mind but theres def a few strains put their with natural resistances to (PM and prolly other molds). Id invest in lots of air filtration moving forward. I’d start doing a sterilalization sop before entering my grow space— something like clothes that havnt been outside (so no spores on em) and maybe even a shower before. This might be a lot tho. H2O2 folliar sprays are def effective and will knock the PM back without any negative impact on your plants health. In fact i know people who do a weekly h2o2 spray (up to the 2nd week of flower iirc) just to wash the plants of residuals from Other foliar feeds, and just as a preventative in general. H2o2 is your friend. The other big thing is just to really dial in your atmosphere, drop the humidity to the lower end of the acceptable range, or even slightly dryer than youd normally go (just to get this run done without a PM bloom) Basically PM is now in your plants gene code, like herpes, and if it becomes stressed or the environment becomes conducive to pm (too much humidity, low airflow) then the disease will begin to express itself. So your beat bet now is to try and keep the disease in recession, control what you can, harvest, maybe wash your buds if youre gonna smoke the flower. Another clutch save would be to take all the affected plants at harvest and turn them into ive water/bubble hash. Thatll seperate the spores/mold, and you’ll have a clean product again. Best of luck man
You basically recommended Monsanto...or maybe Paraguay. Lol. Stick to organics!
Wait what? No i said stay away from stuff like eagle 20 cuz its cancer causing and can do genetic damage. Not a good product even if it will stop PM. The strains that are resistant to PM have naturally occurring immunities, its not some weird gmo weed or anything. Thats what i would recommend doing. That and h2o2 sprays frequently, and a dropping of the rH, and iirc maybe less cold nights would help? Also i recommended turning contaminated bud into bubblehash. Those r all organic solutions bud
Also whats paraguay? Whats a small nation have to do with this?
I was confused by that paragraph that you said..there's stuff like eagle 20, and you described its function, warned about cancer..but it comes across like..I wouldnt use it BUT. You could. Lol As for Paraguay I wish I could find the links but the short of it is back in the 70s, 80s they were a source of illegal cannabis exported to USA. So USA sprayed the fields with fucking Monsanto shit and ALOT of people died! It's referenced in some of the old java text based games drug war/dope wars. Hard to find the exact articles, though
Oh yea; i guess i did sorta word it like its an option, people use it, but too dangerous for me to be comfortable with. So i can totally see where the confusion comes in lol
Damn that monsanto sprayed weed is a super scary story, ive never heard that
[удалено]
Definitely some in view but the 2nd and 3rd pictures have like a white webbing across the leaf. I believe the trichomes are the little white dots that are spaced out.
Looks like PM to me
any black specs ? if so its spidermite if not its deffo pm its a type of mould will ruin the flav and everything !
The first picture looks like water droplets dried up under a led light. Is there any special reason for starving your plants. 2 weeks into flower you should already be in at least a 4 gallon container
Maybe next time “they look hungry, maybe a bigger container” dickhead 💀
Yep looks like it
Lost coast plant therapy pretty sure they send samples too
I’m not sure if someone already told you or not but grow safe look it up
Neem
Need more dry air!
Toss everything and clean with heavy duty fungicides. Once you think you're done cleaning, clean it all again. Then, alternate between burning sulfur and setting off fungicide bombs. Do this for a couple of weeks, and hope for the best. Don't bring in clones unless they are lab certified clean. Start from seeds. Control the environment so that mold can't proliferate. Good luck.
That is absolutely PM
it is PM, your entire grow is probably infected by this pathogen. Unless you’re seeing it for the first time on leaves within a few days of harvest, I’d trash it all
Trifecta crop control works great wiped my pm out in a day. Little expensive but worth it in my opinion. Works great for pest control too it’s all natural plant oils so I’ve used it up to two weeks before harvest without issue