sterilizing substrate

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sueb4653

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how long do I need to leave cypress mulch in the freezer to sterilize it?
 

Cowboy_Ken

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sterilizing

I am not aware of freezing as a method of sterilization. Wetting the substrate then, “cooking" it is what I would suggest.
 

wellington

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RE: sterilizing

Freezing won't sterilize it, but will help to keep any bugs down for a while. The best way it to bake it or boil it. As for how long to freeze it, I froze my coconut coir once and left it in over night. Again, though, I then found that baking it worked better.
 
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