Powder Mildew at the end of week 6

[waterproof808]

In the future, Spray Regalia weekly until week 3 Flower as a preventative. PM will be a thing of the past. It’s organic and safe and approved for cannabis by the Oregon department of agriculture.

Humidity alone does not cause PM. Swings in temperature/RH signal the spores to bloom. Some strains are also highly susceptible. Keeping plants at peak health greatly increases their resistance to fungal attacks, but it’s better to just not grow the ones that always have issues.

 

[vostok]

Vostok, i have always been too afraid to try neem in flower because the smell is so strong, I had to assume it would leave a residual smell/taste.

Also was afraid it would screw up my pistils.

Sounds like you have actually tried it and had none of these issues.

True?

Also what restrictions do you impose?
Like what is the closest to finish that you have used it?

Dose?

Specific brand?

Do you also water some into the soil?

Years back I'm suffering all types of issues with my plants

indeed my shelf was full of bottles with magic potions that cost a bomb but really didn't work

an old buddy said try neem oil very popular in India

so cautionsly I did

and it worked well...last year I got pubic lice appied the neem oil...after a lower shave ....Bamm.. all gone in 12 hours max

then I fed some to my pets ..Bamm.. no more expensive vet bills...pushing the limit I applied some to a curry as recomended ....nice

so yes I'm a cold pressed neem oil convert

avoid spraying the buds ..even better avoid using within 2 weeks of harvest

I apply one teaspoon of cold pressed neem oil to 500ml/1 pint of warm water apply 1-2 times per week

its the best defense for bugs and molds I know of

I understand finding the cold pressed version(like a wax) is difficult in the US..

Azamax maybe the same or Doctor Bonners ??? soap perhaps

in most cases the issue with noobs is they want an immediate fix for a situation that does not really warrent the use of neem

or even more popular is incorrectly applied in the first place

neem oil works by blocking up the mouth parts of bugs then staving them out

to my blog on an old thread https://www.rollitup.org/Journal/Entry/neem-oil.27514/

main reason is its organic...systemic..cheap and does bugs and molds

good luck

 

[vostok]

In the future, Spray Regalia weekly until week 3 Flower as a preventative. PM will be a thing of the past. It’s organic and safe and approved for cannabis by the Oregon department of agriculture.

Humidity alone does not cause PM. Swings in temperature/RH signal the spores to bloom. Some strains are also highly susceptible. Keeping plants at peak health greatly increases their resistance to fungal attacks, but it’s better to just not grow the ones that always have issues.

 

[charface]

Years back I'm suffering all types of issues with my plants

indeed my shelf was full of bottles with magic potions that cost a bomb but really didn't work

an old buddy said try neem oil very popular in India

so cautionsly I did

and it worked well...last year I got pubic lice appied the neem oil...after a lower shave ....Bamm.. all gone in 12 hours max

then I fed some to my pets ..Bamm.. no more expensive vet bills...pushing the limit I applied some to a curry as recomended ....nice

so yes I'm a cold pressed neem oil convert

avoid spraying the buds ..even better avoid using within 2 weeks of harvest

I apply one teaspoon of cold pressed neem oil to 500ml/1 pint of warm water apply 1-2 times per week

its the best defense for bugs and molds I know of

I understand finding the cold pressed version(like a wax) is difficult in the US..

Azamax maybe the same or Doctor Bonners ??? soap perhaps

in most cases the issue with noobs is they want an immediate fix for a situation that does not really warrent the use of neem

or even more popular is incorrectly applied in the first place

neem oil works by blocking up the mouth parts of bugs then staving them out

to my blog on an old thread https://www.rollitup.org/Journal/Entry/neem-oil.27514/

main reason is its organic...systemic..cheap and does bugs and molds

good luck

Thanks,
Congrats on the clean pubes

 

[waterproof808]

View attachment 4106790

Here's one for neem oil. Has the same LD50 as Regalia. Regalia is just an extract of giant knotweed.

 

[vostok]

from Church

Oh wait, don't use ***** ******* That's too simple and it makes too much sense. Instead, find some high priced culinary item that has weak basic properties and use that instead. That seems to be how things work around here.

lolololololol!

credit church

 

[Beachwalker]

My lucky day, i get to ask two people with firsthand info,
The sulfur don't leave smell or taste?
Is there a cutoff period where you wouldn't use it?

I use neem oil first, buds dark brown no good taste of smoke, only good for hashish

Then I try sulfur burner, work much better, no funny taste, but don't want residue

So I fix humidity problem. Now don't burn sulfur or spray neem oil any more
-good luck

 

[Jackriddle21]

Hey Guys, here is an update. I have been spot shooting the PM with H202 mixed with water. I start flushing this weekend. So far the PM is contained but I do have to watch it and spray it as it appears.

 

[Tim1987]

Good news.
How's the humidity been?
Id keep it below 40, if you can.
By the sounds of it. Its still humid, and the mold is still growing.
It usually starts on the leaves.
Just for piece of mind, it may be worth gently checking inside a big cola for mold too. Make sure you sterilize your hands first! Turn the fans off, for a second too.
Glad you're still on top of it.
Keep us all updated.

 

[Jackriddle21]

Good news.
How's the humidity been?
Id keep it below 40, if you can.
By the sounds of it. Its still humid, and the mold is still growing.
It usually starts on the leaves.
Just for piece of mind, it may be worth gently checking inside a big cola for mold too. Make sure you sterilize your hands first! Turn the fans off, for a second too.
Glad you're still on top of it.
Keep us all updated.

Ok, so here was the problem was. I left Cali for Oregon on a 3 days trip and while I was gone my fucking exhaust fan somehow became unplugged. That fucking week it also rained so I came home to just a little bit of Powder Mildew on some leaves. Since then, I got the exhaust fan running, installed a few more fans, and have been trimming PM infected leaves. I also harvested a few nugs and dried them to check for mold inside. I was fortunate enough not to find anything and the smoke was great. Stony but premature. My humidity is 25 to 40% and my temp is 75-78 during the day and about 67 at night with no light.

 

[ShLUbY]

Ok, so here was the problem was. I left Cali for Oregon on a 3 days trip and while I was gone my fucking exhaust fan somehow became unplugged. That fucking week it also rained so I came home to just a little bit of Powder Mildew on some leaves. Since then, I got the exhaust fan running, installed a few more fans, and have been trimming PM infected leaves. I also harvested a few nugs and dried them to check for mold inside. I was fortunate enough not to find anything and the smoke was great. Stony but premature. My humidity is 25 to 40% and my temp is 75-78 during the day and about 67 at night with no light.

humidity doesn't matter once you have PM infecting a plant and fresh spores floating in the air. It can be dry as a bone and it will still persist, trust me, i know from experience. there are a few things that can help prevent PM a lot....

1) don't let your room temp dip below 70 deg (even at night).
2) as you have been, use H2O2 on any infected leaf or stalk, hit infected spot one time, and then come back about 20-30 min later and hit it again. no need to remove the infected leaf at that point, i've never seen it come back in the same spot using this method. the H2O2 eats that shit up! doesn't even leave a trace of the fungus, and it degrades the spores.
3) look for spots in the garden where air flow is not great, and increase it so spores don't settle onto plant tissues
4) get a sulfur burner. one burn a week for a couple hours at a time will put a nice coat on your leaf surfaces and prevent further infections. Also, when this run is done, bomb the room with sulfur for like 6 hours to destroy any lingering spores.
5) keep a close eye on petioles!! often we spray the leaf surface and don't focus on the petioles, where infections can go unnoticed.
6) don't get lazy, or that shit will come back again and again. it's a bitch, but it can be beaten!

 

[Jackriddle21]

humidity doesn't matter once you have PM infecting a plant and fresh spores floating in the air. It can be dry as a bone and it will still persist, trust me, i know from experience. there are a few things that can help prevent PM a lot....

1) don't let your room temp dip below 70 deg (even at night).
2) as you have been, use H2O2 on any infected leaf or stalk, hit infected spot one time, and then come back about 20-30 min later and hit it again. no need to remove the infected leaf at that point, i've never seen it come back in the same spot using this method. the H2O2 eats that shit up! doesn't even leave a trace of the fungus, and it degrades the spores.
3) look for spots in the garden where air flow is not great, and increase it so spores don't settle onto plant tissues
4) get a sulfur burner. one burn a week for a couple hours at a time will put a nice coat on your leaf surfaces and prevent further infections. Also, when this run is done, bomb the room with sulfur for like 6 hours to destroy any lingering spores.
5) keep a close eye on petioles!! often we spray the leaf surface and don't focus on the petioles, where infections can go unnoticed.
6) don't get lazy, or that shit will come back again and again. it's a bitch, but it can be beaten!

For Sure, I am harvesting this shit asap (2 1/2 weeks) and I will set my heater to 72 degrees at night. The H202 is working right now and thank you for the advice about coming back in 20-30 mins and hitting the same spot over again. In 2 1/2 weeks after I harvest I will bleach the shit out of my room, equipment, etc. I am even going to buy a new tent and start most of it from scratch. I built a new room already but I am waiting for clean plants and equipment before I put them in there.

 

[ShLUbY]

For Sure, I am harvesting this shit asap (2 1/2 weeks) and I will set my heater to 72 degrees at night. The H202 is working right now and thank you for the advice about coming back in 20-30 mins and hitting the same spot over again. In 2 1/2 weeks after I harvest I will bleach the shit out of my room, equipment, etc. I am even going to buy a new tent and start most of it from scratch. I built a new room already but I am waiting for clean plants and equipment before I put them in there.

getting a new tent is smart, but honestly if you have clean plants in veg, and PM is only in flower... i would definitely just move to the room and skip the new tent purchase... but either way is fine. Sounds like you have the right ideas and you'll nip this shit real quick. it can be a pain though. i struggled with it for a year (most of 2016) before i finally learned how to win the battle... and it was depressing, demoralizing, and frustrating to deal with.

 

[waterproof808]

My humidity is always in the 70's-80's and zero pm, growing outdoor. I highly recommend using regalia as a preventative for any fungal issues. Its expensive but worth it.

 

[gwheels]

I think what causes PM is high humidity that exceeds the VPD. Air flow helps and getting the Vapour Pressure Deficet in the required range helps a lot better. High humidity can work if you have the air flow and heat.

Growing outdoor is very different. You do not have a controlled airflow you have limitless air flow. It can happen outside but it is a lot more prevalent growing in tents.

Growing in a 4 x 4 or 2 x 4.....its intents.

 

[Jackriddle21]

Will bleach fucking get rid of that PM after I harvest? I will bleach the shit out of the old room and start everything in the new room. However, I wanna kill the Pm in the old room so that I have two rooms. Will bleach alone be able to take care of the problem and clean the PM out of the room?

 

[gwheels]

Bleach in the room. Not pure bleach you can make a much milder solution and it does kill PM.

I swapped my old filter with a new spare i had and sold the old one

 

[Jackriddle21]

Bleach in the room. Not pure bleach you can make a much milder solution and it does kill PM.

I swapped my old filter with a new spare i had and sold the old one

you think I can use the watery bleach on the filter and exhaust fan?

 

[gwheels]

I wouldnt. But you can probably use the filter and fan because they pull out of the environment. They do not blow into the environment.

Mainly all tent walls all pots and that kind of stuff should fix it. Your H2O2 will stop it from spreading (And wash your weed with the h2o2 wash) you should be ok.

Get a humdity meter in the tent too so you know when you have to adjust Maybe you have one.

Funny story. I have this light i do not like. I was using it as supplemental on on 4 x 4 and had trouble with heat so i pulled it to run just a 315 CMH which works great for what i need.
When I look at the pictures of the insides of that light the fan filters are coated with dust that makes me think of PM.

So I will pull all of those stupid filter fans off and sell it clean and ready to grow That shit can harbor in places you would not expect.

 

[Tim1987]

Will bleach fucking get rid of that PM after I harvest? I will bleach the shit out of the old room and start everything in the new room. However, I wanna kill the Pm in the old room so that I have two rooms. Will bleach alone be able to take care of the problem and clean the PM out of the room?

You need to bare in mind, pm spores, are around us all the time. You may even be breathing them in.
Its about having the right enviroment, to stop it from growing in the first place.
You can bleach all you want to. If your enviroment isn't in the zone, you'll soon get it again.
Guaranteed.