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This happened last year and in the end I thought it was vine weavil Did nematode treatmentt

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  • FairygirlFairygirl Posts: 55,117
    It does look like vine weevil, but did you have a query?  :)
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • LynLyn Posts: 23,190
    Could be leaf cutter bees, they love roses. 
    Gardening on the wild, windy west side of Dartmoor. 

  • TheGreenManTheGreenMan Posts: 1,957
    Too jagged for leaf cutters. I’d say definitely VWs 
  • EustaceEustace Posts: 2,290
    edited August 2021
    I too have lots of VWs in my pots, but roses seem to be unaffected by them. Did the nematode treatment work?
    Oxford. The City of Dreaming Spires.
    And then my heart with pleasure fills,
    And dances with the daffodils (roses). Taking a bit of liberty with Wordsworth :)

  • annerickwoodQbr-m6GqannerickwoodQbr-m6Gq Posts: 2
    I assume as problem continues it did not work. Problem also spreading across garden
  • TheGreenManTheGreenMan Posts: 1,957
    Remember that nematodes only work on the VW grubs. If the adults are coming from elsewhere you still may see leaf damage each year. Stopping them from laying the eggs (grit is good) and killing the grubs if they do manage to lay (with nematodes) will save the plant albeit with some messy leaves. 
  • FairygirlFairygirl Posts: 55,117
    In that case you'll need to keep re applying at suitable times to get on top of it.
    As @TheGreenMan says - it doesn't stop adults laying eggs, so you have to be on watch constantly, as well as using nematodes. 
    I don't find they work at all, because of the timing. It's too cold here to apply them when they're needed. 
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • bédébédé Posts: 3,095
    edited August 2021
    If it is not killing the plant you may be able to live with it.  I agree with Lyn on the information available.  A systemic insecticide applied after the flowers are over might work, if you are happy with that sort of approach.  TRy not to kill the polinators.
     location: Surrey Hills, England, ex-woodland acidic sand.
    "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
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