Powdery Mildew - What’s your hot take on treatment?

DMChiz

DMChiz

Well-Known Member
Hey gang,

Like every year, looks like I’ll lock horns with Powdery Mildew again. Yes, air flow is good (I’m outdoors) and humidity is typical for a Toronto summer.

I’m also about 4 weeks into flower. This said, I’ve heard it all and likely used some combination over the years. What I haven’t found is a solid assist in the remedy. I understand that once you have it, it ain’t going away, so what’s the best treatment?

Feels like Potassium Bicarbonate might be my safest bet. It’s only on one of the six plants, but we all know….

Thanks team. Appreciate the feedback!
 
curious2garden

curious2garden

Well-Known Mod
Staff member
DMChiz said:
Hey gang,

Like every year, looks like I’ll lock horns with Powdery Mildew again. Yes, air flow is good (I’m outdoors) and humidity is typical for a Toronto summer.

I’m also about 4 weeks into flower. This said, I’ve heard it all and likely used some combination over the years. What I haven’t found is a solid assist in the remedy. I understand that once you have it, it ain’t going away, so what’s the best treatment?

Feels like Potassium Bicarbonate might be my safest bet. It’s only on one of the six plants, but we all know….

Thanks team. Appreciate the feedback!
Click to expand...
https://www.arbico-organics.com/product/arber-bio-protectant-disease-control/natural-organic-plant-disease-control or Regalia, both are Reynoutria Sachalinensis.
 
thumper60

thumper60

Well-Known Member
DMChiz said:
Hey gang,

Like every year, looks like I’ll lock horns with Powdery Mildew again. Yes, air flow is good (I’m outdoors) and humidity is typical for a Toronto summer.

I’m also about 4 weeks into flower. This said, I’ve heard it all and likely used some combination over the years. What I haven’t found is a solid assist in the remedy. I understand that once you have it, it ain’t going away, so what’s the best treatment?

Feels like Potassium Bicarbonate might be my safest bet. It’s only on one of the six plants, but we all know….

Thanks team. Appreciate the feedback!
Click to expand...
Look into 3% ho2o or better yet zero Tol if you can get it there.
 
driver77

driver77

Well-Known Member
Battling it also. 3% peroxide works but damages good leaves too......maybe diluting it would help but then it's not as effective. I use a bio fungicide that also helped with spreading..... although a better preventative I never think to use it till too late :eyesmoke: Bacillius amyloliquefaciencs strain D474 is in a few products I use the Bonide Revitalize brand. Probably can't use that up there either?
Good luck! Shit sucks :wall:
Look into the 60/40 milk method...I've never tried it but hear it helps.
 
DMChiz

DMChiz

Well-Known Member
My local grow shop carries Lost Coast. I've heard good things and its safe to use in flower, so might give that a whirl. It really, really sucks. Did the added silicate during veg to help build resistance, canopy is airy etc. Kick in head. Oh well. Onward we march!

Screenshot 2024-08-27 at 10.44.08 AM.png
 
thumper60

thumper60

Well-Known Member
DMChiz said:
My local grow shop carries Lost Coast. I've heard good things and its safe to use in flower, so might give that a whirl. It really, really sucks. Did the added silicate during veg to help build resistance, canopy is airy etc. Kick in head. Oh well. Onward we march!

View attachment 5420533
Click to expand...
If you spray that on buds plan on tasting soybean oil when toked, That is no good on late stage buds I have used it yuck! look into citric acid or ho2o for late stage flowering.
 
taproot

taproot

Well-Known Member
A lot of folks use a sulphur spray.

overgrow.com

Safe Fungicide for cannabis

I’m trying a outdoor grow and need to go ahead and get some fungicide, it’s unusually hot and humid still here in Oklahoma. What is a good safe fungicide for cannabis? Can you still use fungicide while in flower and if so what is a good one for this? Hopefully whatever I can find can also be...
overgrow.com overgrow.com
 
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thumper60

thumper60

Well-Known Member
taproot said:
A lot of folks use a sulphur spray.

overgrow.com

Safe Fungicide for cannabis

I’m trying a outdoor grow and need to go ahead and get some fungicide, it’s unusually hot and humid still here in Oklahoma. What is a good safe fungicide for cannabis? Can you still use fungicide while in flower and if so what is a good one for this? Hopefully whatever I can find can also be...
overgrow.com overgrow.com
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Not in flower!
 
Hobbes

Hobbes

Well-Known Member
.

DMChiz said:
That sounds wonderful, unfortunately, I’ve got that Canada thing working against me…:(
Click to expand...
.

I'm from Canada too, I use a drop shipper to get my fix.

I also use an Airros machine to kill PM and bud rot.

airrosshield.com

Home - AirROS by SAGE Commercial Air & Surface Purifiers

The best commercial air and surface purifiers for cannabis grow rooms. Destroy mold, pathogens and odor control products. Contact us today to learn more about how our product can help you stop pathogens including powdery mildew, botrytis and aspergillus!
airrosshield.com airrosshield.com

.
 
Jjgrow420

Jjgrow420

Well-Known Member
Hobbes said:
.



.

I'm from Canada too, I use a drop shipper to get my fix.

I also use an Airros machine to kill PM and bud rot.

airrosshield.com

Home - AirROS by SAGE Commercial Air & Surface Purifiers

The best commercial air and surface purifiers for cannabis grow rooms. Destroy mold, pathogens and odor control products. Contact us today to learn more about how our product can help you stop pathogens including powdery mildew, botrytis and aspergillus!
airrosshield.com airrosshield.com

.
Click to expand...
How much did that run ya?
 
thumper60

thumper60

Well-Known Member
Hobbes said:
.



.

I'm from Canada too, I use a drop shipper to get my fix.

I also use an Airros machine to kill PM and bud rot.

airrosshield.com

Home - AirROS by SAGE Commercial Air & Surface Purifiers

The best commercial air and surface purifiers for cannabis grow rooms. Destroy mold, pathogens and odor control products. Contact us today to learn more about how our product can help you stop pathogens including powdery mildew, botrytis and aspergillus!
airrosshield.com airrosshield.com

.
Click to expand...
Witch unit did you go with hobbes Are there filters that need to be changed.
 
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