Powdery Mildew in Early Flowering

calvin.m16

calvin.m16

Well-Known Member
How clean is your grow space?

I had to remove everything from my grow space other than necessities especially any boxes, clothes, fabric items.. etc.. I then used a Hudson Fogger with Zerotol 2.0 Solution and sprayed the ceiling, walls, floors, everything.. Then I ran an ozone generator for an entire day in the space to do a final nuke.

Haven't seen PM in over a year.

With White Powdery Mildew you need to treat the entire space not just the plants.
 
Pwnstarqt

Pwnstarqt

Active Member
calvin.m16 said:
How clean is your grow space?

I had to remove everything from my grow space other than necessities especially any boxes, clothes, fabric items.. etc.. I then used a Hudson Fogger with Zerotol 2.0 Solution and sprayed the ceiling, walls, floors, everything.. Then I ran an ozone generator for an entire day in the space to do a final nuke.

Haven't seen PM in over a year.

With White Powdery Mildew you need to treat the entire space not just the plants.
Click to expand...
calvin.m16 said:
How clean is your grow space?

I had to remove everything from my grow space other than necessities especially any boxes, clothes, fabric items.. etc.. I then used a Hudson Fogger with Zerotol 2.0 Solution and sprayed the ceiling, walls, floors, everything.. Then I ran an ozone generator for an entire day in the space to do a final nuke.

Haven't seen PM in over a year.

With White Powdery Mildew you need to treat the entire space not just the plants.
Click to expand...
It's clean. I'm guessing fresh air intake introduced it to the space and cold "night" temps encouraged it. I will clean again thoroughly after these finish and burn some sulfur in the space. Considering pulling fresh air from a different location. In another month or so my temp swings won't be an issue and will not be so inviting. I am going to use suggested methods to get through this cycle then make changes I mentioned. Haven't had an issue with PM since I lived in SF. I agree completely with what you are saying if my environment is inviting it will continue to be an issue that will keep me chasing my tail.
 
calvin.m16

calvin.m16

Well-Known Member
Pwnstarqt said:
It's clean. I'm guessing fresh air intake introduced it to the space and cold "night" temps encouraged it. I will clean again thoroughly after these finish and burn some sulfur in the space. Considering pulling fresh air from a different location. In another month or so my temp swings won't be an issue and will not be so inviting. I am going to use suggested methods to get through this cycle then make changes I mentioned. Haven't had an issue with PM since I lived in SF. I agree completely with what you are saying if my environment is inviting it will continue to be an issue that will keep me chasing my tail.
Click to expand...
Sounds about right, I'd avoid using exhausts or intakes into or out of the grow space itself. Look into co2 supplementation and air condition the space without exhausting or pulling air into the grow.
 
Pwnstarqt

Pwnstarqt

Active Member
Just an update. I sprayed the Bakingbsoda and water every 3 days since then (3 or 4 times) and increased air circulation with a combo of pruning bottoms and shifting some fans around. After the first application I haven't seen any other signs of PM. Thankfully it was spotted super early on and was manageable.
Also found the culprit. Well, potentially the culprit. Local friend who I trade trimming work with brought his rooms down last week and off in the corner some lower fans had a touch of PM. So either I brought it to him or he brought it to me. So I definitely need to be more vigilant about changing clothes and showering when going from o e to the other. Mine was early and manageable his was super late in the cycle and also manageable. Both spaces will be or have already been cleaned with some bleach and Sulphur burned in the empty room. Appreciate all the help I recieved here. Lots of very helpful advice posted sans 1 (but maybe they had awful experiences with PM hard to say). First RIU thread was a success thanks to this great community.
 
ZookieBoy

ZookieBoy

Member
Hobbes said:
I wouldn't worry about the heat from your light drying the solution too quick - it's the coating that changes the surface of the plant PH that is the mechanism that kills PM.

With something like Dr Zymes the citric acid dissolves the PM so needs to stay liquid longer.

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You can remove infected leaves but be careful of spreading spores.

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Does anyone know about mixing milk with baking soda?

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Hey brotha I’m currently on day 25 I’ve been doing all the research I can as to not wanting to alter or effect the trichome development or flavor. Currently keeping PM at bay did a neem foliar early flower but have heard anything after 21 days you taste it. Which I believe as I’m looking at some of the frostiest ladies I’ve seen at 2/3 weeks.. anyway. It’s still early enough to do possibly rid it as a whole. Not really wanting to mess with milk or h2o2. Have heard multiple ppl say dr zymes. As well as on Dudegrow he said it’s the only thing he trusts using during flower. At this point Ik there’s not much to lose trying it. Just looking for a true home growers review. Ans how late into flower do you use it. Ans is it truly a no residue / flavor. I understand how it works by making the leaf ph acidic. Very cool. Appreciate the feedback if you get to this
 
ZookieBoy

ZookieBoy

Member
Pwnstarqt said:
Just an update. I sprayed the Bakingbsoda and water every 3 days since then (3 or 4 times) and increased air circulation with a combo of pruning bottoms and shifting some fans around. After the first application I haven't seen any other signs of PM. Thankfully it was spotted super early on and was manageable.
Also found the culprit. Well, potentially the culprit. Local friend who I trade trimming work with brought his rooms down last week and off in the corner some lower fans had a touch of PM. So either I brought it to him or he brought it to me. So I definitely need to be more vigilant about changing clothes and showering when going from o e to the other. Mine was early and manageable his was super late in the cycle and also manageable. Both spaces will be or have already been cleaned with some bleach and Sulphur burned in the empty room. Appreciate all the help I recieved here. Lots of very helpful advice posted sans 1 (but maybe they had awful experiences with PM hard to say). First RIU thread was a success thanks to this great community.
Click to expand...
What day are you at now ? Any updates on how you feel the baking soda / water has been effecting the buds. Also is the pm gone ?
 
Pwnstarqt

Pwnstarqt

Active Member
The Baking soda seems to work great. Seems the keast chemically invasive option as well. I just ended my fifth week of flowering and things are looking great. The pm is being held at bay is the best way to describe it. I've been spraying about 1 per week now or if I see signs of the PM creeping back in. This has been a great solution and very cost effective. I will be spending dometime cleaning and burning sulfur in the space before my next round of clones go into this space. As far as affecting the buds there are some places where it has turned the pistils brown. Other than that no negative effects ha e been noted. I will probably give everything a light rinse has it comes down to be trimmed.
 
westcoast420

westcoast420

Well-Known Member
No problem running sulpher up to week 4-5 if running a 9-10 week strain. What are your humidity levels? Usually at lights off is when you see the biggest spike in rh. Also make sure you have something filtering your intake air.
 
Hobbes

Hobbes

Well-Known Member
ZookieBoy said:
Hey brotha I’m currently on day 25 I’ve been doing all the research I can as to not wanting to alter or effect the trichome development or flavor. Currently keeping PM at bay did a neem foliar early flower but have heard anything after 21 days you taste it. Which I believe as I’m looking at some of the frostiest ladies I’ve seen at 2/3 weeks.. anyway. It’s still early enough to do possibly rid it as a whole. Not really wanting to mess with milk or h2o2. Have heard multiple ppl say dr zymes. As well as on Dudegrow he said it’s the only thing he trusts using during flower. At this point Ik there’s not much to lose trying it. Just looking for a true home growers review. Ans how late into flower do you use it. Ans is it truly a no residue / flavor. I understand how it works by making the leaf ph acidic. Very cool. Appreciate the feedback if you get to this
Click to expand...
.

Sorry for the delay getting back to you ZookieBoy.

I used Dr Zymes Eliminator in a post harvest bath and I didn't notice any smell or dissolved trichomes. Eliminator would be my first pick at the stage you're at.

Doctor Zymes - pesticide free insecticide fungicide

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Good Luck!

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