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Hi all I have been seeing some fungus gnats in my office where all my… | Pests, diseases and problems | Plantaコミュニティ

Darian

Hi all I have been seeing some fungus gnats in my office where all my plants are and I have the yellow sticky traps out but I want to know how dangerous this is for the plants and if some granuals and sticky traps can’t fix it. It hasn’t really been a problem before but now I’m worried as I am see some brown on the leaves as well as gnats all around on many plants just wanting to keep the greenery happy lol thanks all

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  1. Rachel

    gnats can indicate root rot (which might be where the brown leaves are coming from) and/or overwatering (which also contributes to root rot). there are several ways to deal with gnats depending on how bad the infestation is. if you have any healthy gnat-free plants, sprinkle some cinnamon on top of the soil and it will keep away bugs. the gnats infested ones, i would 1) check the roots for rotting and snip the diseased ones. 2) spray down (not soaking, but wet) the healthy roots with a solution of hydrogen peroxide and filtered water. 3) repot the plants into fresh soil. i also spray down the pot a lil bit with the same hydrogen peroxide solution just in case. if the infestation is really bad, i would attempt some insecticide first before doing the steps above. just be careful with overwatering in the future :)

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    • Rachel

      i just got done dealing with a small gnat problem with my cilantro so i literally did all these steps yesterday and this morning (it’s late afternoon now) and i have not seen a single gnat. but i’m keeping an eye out for the next few days just in case lol

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  2. JW

    Butterwort literally demolishes any gnat population. Highly recommend and you get an excuse for another plant.

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