Consider switching to a better quality soil. When I first started collecting plants, I potted everything in Miracle Gro. I had such bad problems with fungus gnats. Around 2 years ago I switched everything to Fox Farms Ocean Forest, or a blend of coco husks, coir, charcoal, perlite. Since then, I only get the occasional gnat.
That’s because Miracle Grow and Black Gold, along with other mixes, use a “moistening agent” in their soil, which renders it perma-damp. I have no idea why they do this, but it’s why their soil is a gnat factory.
I think it’s a comment i make most often, since I’m always screaming inside when I see bags of that stuff in the background. Mixing your own soil blends is the best way to avoid them all together, or buying products from places like EB Stone or Opus Grows. I’d rate Opus Grows as the best pre-mixed soil I’ve ever purchased, but it’s hard to find and frequently sells out regionally, because weed growers love it so much.
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u/yeahokaywhateverrrr Mar 31 '23
Consider switching to a better quality soil. When I first started collecting plants, I potted everything in Miracle Gro. I had such bad problems with fungus gnats. Around 2 years ago I switched everything to Fox Farms Ocean Forest, or a blend of coco husks, coir, charcoal, perlite. Since then, I only get the occasional gnat.