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Can't get rid of Whitefly..... HELP!

I am having a huge problem with whitefly in my greenhouse  especially on my pepper plants. I have tried using French marigolds which have not done anything to reduce numbers and  yellow sticky traps didn't work.

I am a farmer so have got access to insecticides which I have been using (as a last resort) as seen by all the dead whitefly on the leaves of the plant. I don't want to spray them all the time but the damn things keep coming back!!! 

what can I do to rid myself (and my plants) of these loathsome pests?

pleaee see pictures below.

thank you in advance 







  • DovefromaboveDovefromabove Central Norfolk UKPosts: 72,780

    Is it possible to put the growbags onto boards and drag them outside into the sunshine, fresh air and rain ?

    “I am not lost, for I know where I am. But however, where I am may be lost.” Winnie the Pooh

  • westy2kkwesty2kk Posts: 3

    No unfortunately taking the grow bags out wouldn't be possible as there is not enough room by the door of the greenhouse.

  • TootsietimTootsietim Posts: 178

    an organic friend of mine used to claim that only Mexican marigolds deterred whitefly, and another acquaintance uses a hand held vacuum, (dustbuster) to suck the adults out of the air because they fly off when disturbed.

  • Singing GardenerSinging Gardener EssexPosts: 1,176

    In this month's GW magazine Monty says that he grows basil next to his tomatoes to deter whitefly. I hadn't heard this before but I also grow basil in my greenhouse and don't suffer greatly from whitefly.

  • Pete.8Pete.8 Billericay, EssexPosts: 7,650

    I grow basil and marigolds amongst my toms. and have no whitefly or any other unwanted insects.
    Once the basil goes over I do get some whitefly toward the end of the season, but nothing significant.

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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