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Fruit flies or what?

Hello all and happy new year.

For a while I've been seeing what looked like fruit flies around my flat. I've been wondering where they were coming from. Since it's got a nit chilly I've brought my proper troughs inside and have placed them on the window sill, above the radiator.

Today I went to water one of the plants and to my shock and horror ....there were the tiny flies! Thus they must be cone from the plants done how.

im a complete amateur at this. So can anyone tell me how I can get rid of these pests....without damaging the plants if possible?


thank you



  • PalustrisPalustris Posts: 4,249

    More likely fungus gnats than fruit flies. These live on the surface of potting compost and the larva eat the roots. There are insecticides which deal with them.

    Also helps if you can scrape off the top inch or so of the compost and replace it with grit (the stuff they ell for the bottom of aquaria is ideal.).

  • The fungus gnats seem the most positive as soon as I watered they flew up. I'll have a go at what you've advised and get an insecticide. Thank you so much

  • FleurisaFleurisa Posts: 779

    You need to keep the top surface of the compost dry and only water from below into a tray. You can buy yellow sticky paper to trap the flies onto, try a garden centre or b&q

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