I need some advice. I have a bag of what I consider my favorite and best potting mix. I always use it for sowing seeds. It's a bit more expensive than other potting mixes. I have a bag that has been opened but was kept closed in my garage for over month. I want to use this bag for seed starting but am worried about gnats especially gnat larvae that can destroy sprouting seeds.
I have an old microwave that we were going to throw out but forgot to. It is also in my garage. It still works. I had read about sterilizing potting mix in a microwave. So I would like to try that. What I need advice on is HOW to sterilize potting mix in a microwave oven.
What do you put the potting mix in to cook it in the microwave?
How long do you cook the potting mix in the microwave to kill any bacteria, fungus, or bugs? I want the mix sterilized for seed starting.
I have perlite in this potting mix. Would that cause a problem when heating the mix in the microwave? It wouldn't explode or anything, right?
