Recently purchased 2 bags of dirt and both seem full of mold/mildew. Musty smell! Can I treat with 50/50 hydrogen peroxide and water? Longtime member, first time having a question.
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Good cannabis soils are inoculated with mycorrhizae which will grow into a white mold in the dirt. I would simply stir it up and spread it out. Dont try to kill it.
I have this happen here in Missouri all the time as sellers let the bags sit out in the spring rains.
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I’m in MO too. I believe we’re fairly close to each other. I thought that would be the way to do it, as that’s what I did, but wanted some input from others. Thanks for shouting back!
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This heat is miserable already. So much rain all the local strawberries molded on the plants. My cherry tree had mold on a third of the cherries. Now it looks like stuff will dry out and burn up. Weather here drives me mad sometimes. I came from S. California and enjoyed nice weather for 30 years, and now I deal with whatever Missouri wants to throw at us. However I do enjoy the space we have. California was wall to wall people and I don’t miss that.
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I agree with @Spiney_norman if its a white looking mold it’s normal. The bag of soil should be full of microbial life. You dint want to kill it off. It will all help to make the nutrients available to the plant. Happy growing 
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Thanks for the shout. I thought that was right, but wanted to check with the forum. I talked with Fox Farms about it and they did give the same info.
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Yeah, MO weather is crazy.
Lived in Mo all my life… when people move here they’re always like WTF with the weather. 
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There are days that are gloriously nice. I will spend the day outside thinking how great it is. Then the next day I want to crawl into the basement and hide.
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It’s a rollercoaster, for sure
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I had a bag of Happy frog 
on Monday I opened it and it smelled like a retirement home basement closet with wet blankets inside.
Had some white patches as well. I just mixed it up added a little worm casting to it and some Voodoo Juice (microbial life) and filled up my pots.
A lot of these bags sit outside at the store and go through so much treacherous weather conditions.
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I thought that was the issue. Been getting my dirt from the same place for years, and this was the first time I had this situation. I agree with your nose, didn’t smell how I was expecting. But I do have a couple of nice little ladies growing!
I do appreciate all the posts! Good to know that my suspenions were right.
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You dont notice how much of a difference it is until you move away and then go back to visit. Ima KC boy. Born and raised. Went to Smithhale and Ruskin high. Lived in Ruskin Heights for most of my childhood. Moved to Denver in 07. Went home to visit and I said same. “How did I live here?” It was summer, hot upper 90’s and 70% humidity. I was miserable after living here at 5280 with only 20-30% humidity.
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What’s up, St. Louis in the house!
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Aw Snap…A St Lunatic. Did you get down with Nelly back in the day. I really liked them. Country Grammar!
would the water rehydrate the molds ? not sure if that’s the right way to ask that question
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Molds simply go dormant. So water will bring it back to life.
Stir it up and you should be fine. If its a large mass you can remove the majority of the area and use the rest. Fungus is a natural part of soil.
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yeah the bag i got i threw in my garden outside and went with a local company