Pieris

Posts

• punkdoc Posts: 15,039

  April 2021

  I think we need a picture.

  How can you lie there and think of England
  When you don't even know who's in the team
  
  S.Yorkshire/Derbyshire border

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• K67 Posts: 2,506

  April 2021

  Without a photo hard to say but it could be sooty mould. 
  https://www.rhs.org.uk/advice/profile?pid=770
  

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• AaronBil Posts: 100

  April 2021

  My guess is dreaded lace fly poop perhaps left over from last year?
  
  

  https://www.rhs.org.uk/advice/profile?pid=663

  
  any other symptoms?
  
  I spray mine a few times a year to try and keep on top of it. 

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• susantuz Posts: 2

  April 2021

  Thank you for your help. I have subsequently googled sooty mould and I think that is what it is. 

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