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Thread: Fungus gnats

  1. #1

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    OK, lets settle this once and for all, are fungus gnats harmful to plants? There is alot of controversy over this subject if the larvae eat the plant [img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img] or if they are harmless [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] . So lets settle this once and for all [img]http://www.**********.com/iB_html/non-cgi/emoticons/wink.gif[/img] .

  2. #2

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    Yes they are harmful to plants such as first year venus fly traps. I lost two of mine before I killed the infestation. The larvae eat the roots. I caught them in the roots of my judith hindle that died also.

    Isotex drenching and sundews will kill them.

    joe
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  3. #3

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    They are harmful to small plants, yes. In the wild there is usually a sundew nearby to catch them.
    Alexis Vallance, U.K.
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  4. #4

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    They are harmful to utrics.

    But it all depends on how severe the infestation is. I have been using those yellow sticky traps to keep them under control. I have some Bti (a strain of the biological insecticide Bt that is designed to control fungus gnats), but I am waiting till I've got my thrips/aphid infestation under control before I try it out.

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