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Rose sore

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i have over 40 rose bushes over 2 gardens and whilst dead heading today we noticed some sores on the stems of some of the roses at first I thought they were wind damage maybe from the thorns scratching but then doubting myself I decided to post on here I'm in Gloucestershire we did have the high winds very bad where our house is positioned. 

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  • ObelixxObelixx Vendée, Western FrancePosts: 27,562

    I think you might have a problem with some kind of insect as those edges look bitten to me.   There is a sawfly that lays eggs in stems and the larvae then chew their way out.  Here's an example tho not necessarily the same critter you have - https://completegarden.wordpress.com/tag/rose-pests/ 

    "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
  • C71C71 Posts: 1

    I've got the same problem with my roses and I'm interested in finding out how to get rid of sawfly effectively? (So far I've been removing the flies by hand and cutting off the damaged stems, although I really don't know if this is the correct approach...)

  • Yes thank you i just found the little catterpilars devouring my roses they eat quick,

    right war it is they have just taken number one spot from slugs on my prize dahlia's.

  • ObelixxObelixx Vendée, Western FrancePosts: 27,562

    The RHS has this to offer with various treatments - https://www.rhs.org.uk/advice/profile?PID=196 

    "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
  • ok here is my first lot of results from bbc gardening advise site

    Treatment Chemical

    Products containing the following chemical ingredients are all effective on Sawflies

    Pyrethrum

    Note: It is important to read manufacturer's instructions for use and the associated safety data information before applying chemical treatments.

    Organic

    Inspect bushes every week from April/May onwards for the signs of sawfly infestation then search for the larvae and remove by hand.Tell-tale signs include transparent patches on leaves where young larvae are feeding; seeping sap, where the insects have damaged plant tissue as they lay eggs; areas of defoliation or skeletonised leaves.Position susceptible plants in an open position where birds can easily feed on the larvae.PreventionSelect varieties that are reported as less susceptible to attack, particularly roses and apples.

  • Good morning fellow gardeners ok so i have spent a quite a few hrs reading up on saw fly which is definatley my problem and i feel this man has the best answer. in my opinion.

    https://hedgerowrose.com/pests-diseases/2011/06/01/identifying-and-eliminating-sawfly-larvae-on-roses/

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