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wild roses


can anyone help me solve a query, I have found in the garden. A wild rose stem which has appeared with no rose only a pompom looking flower on the stem which  is not a wild rose or is it?  Or Is this something to get rid  of ASAP or .....

any advice would be gratefully received


  • BobTheGardenerBobTheGardener Posts: 11,391

    It's called a 'Robin's pincushion' and is a gall caused by a wasp which lays it's eggs on the stem and the grubs release hormones which cause these.  Fairly common on Dog roses.

    Last edited: 05 June 2016 11:51:21

    A trowel in the hand is worth a thousand lost under a bush.
  • Thank you for your reply, very interesting

    Are any wasps still inside?

    The roses has just appeared growing in my rocky/wall.

    Looking at a site on the internet the wasp doesn't look like the normal type of wasp we have in

    West Wales and it seems that it doesn't  have much occurrence in this area either. 

    I live in North Pembrokeshire on the coast.

    Do you know if this type of wasp is a nuisance?

  • Most wasps are beneficial to the gardener so it should be a case of 'live and let live'. The common wasp can be annoying in late August when it's hungry and starving but then again I'm annoying when I'm hungry too!

  • BobTheGardenerBobTheGardener Posts: 11,391

    No, there will be small larvae (grubs) inside.  The wasps involved are tiny - you wouldn't normally even notice them and they don't sting.

    A trowel in the hand is worth a thousand lost under a bush.
  • Thank you for all the information, very interesting.

    We all learn something new every day.


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