mildew prevention

[12HourPower]

It sounds crazy but it's a thing. This guy brews up his own LAB from milk (whole, from a cow), rice water, and molasses.

https://youtu.be/D3mkQpneQ3U?feature=shared

This website sells the starter culture. Not suggesting purchase, but there's some info.
https://mibeneficials.com/products/l...ed%20as%20well.

Glad I don't need to do this!

[Rootsruler]

Bluey Depends on where you live. If you're in Cali then almond but if you're in the midwest, like Nebraska or Oklahoma then full fat or the cattle ranchers will have something to say! ;P

[Bluey]

Full cream, low fat, skinny, soy, almond, lactose free?

[Rwise]

Milk did not work for me, I tried it though.

[12HourPower]

Rootsruler I read about that treatment a few different places. Lactobacillus makes antifungal enzymes. I heard it needs light to activate. People say it works well for outdoor plants, in the sunlight.
Hopefully I won't need to test it. My mildew problem has gone away since I tightened up my environmental conditions.

[Rootsruler]

1 to 3 milk to water in a spray bottle. Shake well and make sure you cover the entire plant top to bottom side to side under over. After a day or two respray with just water to wash off the milk residue.

[12HourPower]

This is wpm on grass and blackberry a few km from my house where I walk the dog. It's like this in most low areas where water and fog collect. I put my outside clothes in the dryer for 15 minutes when I get back home. I have stopped it inside the tent, but it took 10 days of lower humidity conditions to abate.

[Bluey]

Depends on temps, the size and density of your buds and airflow so it will vary but I'd say at 45% you should be pretty safe in late flower. We are talking big buds though

[12HourPower]

"If you can keep the RH in your buds below the spore germination point you won't get moldy buds"

I'm guessing that means a room RH of 45%, to keep the buds below 60%.

[Bluey]

From memory spores need a certain RH% to germinate. I think around 60% or above but not sure. If you can keep the RH in your buds below the spore germination point you won't get moldy buds.

[Ckbrew]

"Now maintaining 74-75°F and 45-50% RH pretty much around the clock..."

That should do it for avoiding WPM. If you previously had a bad infection clean everything in the tent and lung room before starting a new grow. As is often said, an oz of prevention is better than a pound of rotten weed. Lots of internal air circulation inside the tent. I use multiple 6 inch clip on fans. Keep the air moving.

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[12HourPower]

The breeder was like "Ohhhh, you wanted mildew resistant? I thought you said mildew VULNERABLE. Woops!"

[Rwise]

Welcome to GWE BTW
Here my humidity can be 100% (I grow outdoor), so I thought I would try a "mildew resistant" strain, it was the first to have WPM that year! It was back to air flow.

[12HourPower]

Thanks for the suggestion. I will inspect that one. I was considering crop defender 3 which is basically rosemary, thyme, peppermint, and clove essential oils mixed with water and organic emulsifiers. Not sure how that has antifungal properties as it's listed for use against pests AND mildew. I know a grower who mixed his own version of that and swore by it. But I don't think he used it during flower. His garden experienced dry summers, he probably didn't need or want to use it in his outdoor hoop house(s).

I won't resort to anything being sprayed unless my environmental intervention doesn't work. But honestly, I think it will be okay now. It wasn't even a problem for literally months, until one day the humidity just shot through the roof, and then poof. I got to say though, none of the spots I find are anywhere close to as severe as most pictures of WPM on the web. 🤞 🤞 I will stay vigilant

[12HourPower]

I forgot to mention, the few spots I found all appeared within the last few days, following 3-4 days of RH of 55-65% due to volatile outdoor weather. I was fretting hard, hence the AC and DH. Still not pleased with the electric consumption, but the environment is super stable now. My neighbor was curious why I didn't just open the window and put a box fan in it, I was like "are you insane?! The moisture and spores are coming from outside!"

Anyhow, now the air is moving superbly at 75F and 45%. They just woke up a few minutes ago, I am going to check for leaf lay and wet spots (and everything else).

That's a bummer about your outdoor garden. You must be in the Midwest or Southern states.