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darn fungus gnats

Posted by marric Z5a Ontario (My Page) on
Mon, Nov 19, 12 at 15:35

I recently repotted a few of my plants. All of a sudden I noticed that there were lots of fungus gnats around. I sprayed (using a generic household spray) but the next day they would be back and there would seem to be more of them. Then I realized they were all around the newly potted plants, the ones I used the MG soil with. I did some checking and a lot of people are having this problem with MG. The last bag is going to be dumped in my garden! I have read about sprinkling cinnamon on the soil and that seems to be working. I did vacuum up the adults, just sucked those suckers up! Just needed to vent. Marg

Follow-Up Postings:

RE: darn fungus gnats

  • Posted by val1 z4 UT (My Page) on
    Mon, Nov 19, 12 at 16:30

I had fungus gnats last year and tried the cinnamon without great results. I resorted to an insecticide for houseplants and that did the trick. I had to spray a few times to get all of them. Good Luck.


RE: darn fungus gnats

  • Posted by tapla z5b-6a mid-MI (My Page) on
    Mon, Nov 19, 12 at 17:49

The issue almost certainly lies in the combination of soil choice and watering habits. Keeping your soils excessively wet provides an environment that makes them dizzy with the desire to reproduce. ;-)


RE: darn fungus gnats (fg)

Cinnamon is used & recommended here as an antifungal for plants, not against insects/ pest.

I'd agree w/ Al here, the best way to rid oneself of FG is to stop overwatering, or change to much faster draining mix which won't be so water retentive & therefore attractive to the FG.

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