Buddleia - black residue on uppermost leaf axis/leaf stems

Discussion in 'Pests, Diseases and Cures' started by TheMadHedger, Apr 19, 2017.

  1. TheMadHedger

    TheMadHedger Gardener

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    As per the title, this is only occuring on one of my Buddleia Davidii bushes.

    Any ideas what might be the cause please, as well as a possible treatment?

    Thanks
     
    TheMadHedger, Apr 19, 2017
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  2. Sirius

    Sirius Total Gardener

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    I think it's from aphids.
     
    Sirius, Apr 19, 2017
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  3. TheMadHedger

    TheMadHedger Gardener

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    Thanks. Would the aphids still be visible though? I ask as I've examined a pice of the affected leaf under a powerful magnifier yet I see no sign of any aphids.
     
    TheMadHedger, Apr 19, 2017
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  4. Marley Farley

    Marley Farley Affable Admin! Staff Member

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    Yes I go with Sirius too.. The sooty Mold builds up after a while from the aphids, especially if the ants are farming them..
    Have a look at the RHS link here..
    Sooty moulds/RHS Gardening
     
    • Agree Agree x 1
      Marley Farley, Apr 19, 2017
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    • TheMadHedger

      TheMadHedger Gardener

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      Thanks a lot.

      Is there a good pet friendly way to dispose of aphids (just in case my dogs try and lick the leaves for any reason)?
       
      TheMadHedger, Apr 19, 2017
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    • Marley Farley

      Marley Farley Affable Admin! Staff Member

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      Well personally I use Neem oil diluted with horticultural soap and water and spray on. This is the ratio I use for a litre and I think it is pretty standard.. 1 litre of warm water... 1 teaspoon Cold pressed Neem oil... 1/3 teaspoon of insecticidal soap.. Mix and spray. :thumbsup: I then keep the dogs away until dry..

      Do have a look here for other organic recipes..!
      How To Get Rid Of Aphids: 12 Organic Methods That Work
       
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        Marley Farley, Apr 19, 2017
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      • TheMadHedger

        TheMadHedger Gardener

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        Thanks, I'll give that a go. :)
         
        TheMadHedger, Apr 19, 2017
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