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

[DMChiz]

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]

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!

https://www.arbico-organics.com/product/arber-bio-protectant-disease-control/natural-organic-plant-disease-control or Regalia, both are Reynoutria Sachalinensis.

 

[DMChiz]

https://www.arbico-organics.com/product/arber-bio-protectant-disease-control/natural-organic-plant-disease-control or Regalia, both are Reynoutria Sachalinensis.

That sounds wonderful, unfortunately, I’ve got that Canada thing working against me…

 

[curious2garden]

That sounds wonderful, unfortunately, I’ve got that Canada thing working against me…

https://www.canada.ca/content/dam/hc-sc/migration/hc-sc/cps-spc/alt_formats/pdf/pubs/pest/_decisions/rd2015-07/rd2015-07-eng.pdf

Well boo, I thought they were working toward approval

 

[thumper60]

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!

Look into 3% ho2o or better yet zero Tol if you can get it there.

 

[DMChiz]

https://www.canada.ca/content/dam/hc-sc/migration/hc-sc/cps-spc/alt_formats/pdf/pubs/pest/_decisions/rd2015-07/rd2015-07-eng.pdf

Well boo, I thought they were working toward approval

I know! Hence, I might be left with Bicarbonate as my best/most accessible option….

 

[driver77]

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 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
Look into the 60/40 milk method...I've never tried it but hear it helps.

 

[DMChiz]

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!

 

[thumper60]

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

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]

A lot of folks use a sulphur spray.

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

 

[thumper60]

A lot of folks use a sulphur spray.

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

Not in flower!

 

[Jjgrow420]

I second using citric acid.
Safe, easy, non burning, no residues.

Sulphur, and copper are affective fungicides.

 

[Hobbes]

.

That sounds wonderful, unfortunately, I’ve got that Canada thing working against me…

.

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.

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[Jjgrow420]

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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.

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

.

How much did that run ya?

 

[Dboybudz]

That milk spray does ok 60/40 water to milk. Has to be applied in full sun to activate the enzymes in the milk to slow PM. Rain will wash it eventually.

 

[thumper60]

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.

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.

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

.

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

 

[Hobbes]

How much did that run ya?

I think it was around $80 for shipping, it's been a while since I ordered.

.

 

[Hobbes]

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

For the airros I ordered their smallest unit - 40XX - and run it at 25% power.

There are filters that need changing every couple of years. I changed my filter and other parts, very simple.

OUR MODELS - AirROS by SAGE Industrial

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[Jjgrow420]

I think it was around $80 for shipping, it's been a while since I ordered.

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Lol not shipping, how much did the unit cost. You can dm me if you don't wanna post it

 

[Hobbes]

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Lol not shipping, how much did the unit cost. You can dm me if you don't wanna post it

LOL! I just got confused.

If memory serves it was around $1,700 USD, with exchange and tax it was around $3,000 CAD.

You can get a quote from this page - black box with white writing on the left side of the page.

OUR MODELS - AirROS by SAGE Industrial

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airrosshield.com

.