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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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Fungus Gnats in PF Cakes - No Houseplants
    #9103210 -

Before anyone suggests using the search engine, I already have and I know how I will deal with the problem. My question is, how did the problem start?

First of all, it's a bit late in the season for flies and gnats in my area. Secondly, I've read that the gnats breed in houseplants, then snack on mushrooms. Thing is, I have no houseplants (cats will destroy them). We don't keep food sitting out, and the house is generally quite clean.

Now, I only ever see the gnats on two of my five cakes (all in the same FC). Those two cakes (one PE, one B+) had started to pin before the other three (one PE, two B+), but since I first noticed the gnats, they appear to have stalled while the other three are fruiting nicely. These two also have a lot of bruising, and there is a tiny little hole on the side of one cake. The hole is shallow, but is the right size to house one adult gnat. I've never seen more than 4 adult gnats at a time in my FC.

I've read that the gnats don't really cause much damage, but they appear to be harming those two cakes of mine, while ignoring the almost-ready-to-harvest shrooms on the other cakes. One cake has two pins that haven't changed size in a few days, and the other had one pin that aborted, with no new pins since.

If I manage to get rid of the adult gnats, will my two stalled cakes recover, or is it possible that there are gnat larvae in them? I don't know where else there could be larvae in the house. And why aren't they bothering my three fruiting cakes?

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Re: Fungus Gnats in PF Cakes - No Houseplants [Re: Norton]
    #9103229 -

Just a quick question: Did you purchase your spawn substrate or did you make it and sterilize it yourself?


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To Quote Voltaire: "God created man in his image and man returned the favor". Does this say something about man, or God?

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Re: Fungus Gnats in PF Cakes - No Houseplants [Re: Big Red] * 1
    #9103236 -

They don't breed in fully colonized cakes, and don't eat enough to cause harm.  Set an almost empty bottle of red wine in the area and they'll fly in there and get trapped.
RR


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Re: Fungus Gnats in PF Cakes - No Houseplants [Re: RogerRabbit]
    #9103259 -

I'm using BRF/Verm cakes, mixed and pressure-cooked myself.


Good to know that they won't breed in my cakes. I just find it odd that they're not going for my mushrooms, and only hanging around on my two non-fruiting cakes. Also, that tiny hole had me worried.

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Re: Fungus Gnats in PF Cakes - No Houseplants [Re: Norton]
    #9106628 -

They like to snack. You can use wine like RR stated I have had luck with small jars of vegtable oil and also coating strips of plastic with vegtable oil (good fly paper) they stick it it then you can just toss them out.


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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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