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Beetle damage on wallflowers

JacquimcmahonJacquimcmahon Posts: 1,039
in Problem solving
Does anyone have natural remedies for swarms of tiny black beetles making lace out of my wallflowers and narstishium? Internet stats they are brassica beetles and I can only find links to chemical solutions.

thanks.
Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.

Posts

  • PalustrisPalustris Posts: 4,307
    The old method was to coat a piece of cardboard with grease, or something sticky and pass it over the plants. The beetles jump up and stick to the grease. Never tried it so no idea if it works though.
    Neem oil is a naturally occurring insecticide which might work.
  • JacquimcmahonJacquimcmahon Posts: 1,039
    Tried the grease thing and caught a few but not enough to make a difference. In the last two days I’ve seen healthy plants turn to husks. 
    Marne la vallée, basically just outside Paris 🇫🇷, but definitely Scottish at heart.
  • Blue OnionBlue Onion Posts: 2,995
    Neem oil and yellow sticky traps tapped against the leaves by hand every day?  
    Utah, USA.
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