Roses & black spot

edited 30 November -1 at 1:00AM in Greenfingered MoneySaving
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JEN22JEN22 Forumite
612 Posts
edited 30 November -1 at 1:00AM in Greenfingered MoneySaving
My roses have already got blackspot. They had it last year. I have removed the diseased leaves but some stalks are covered in it too. Do I cut the stalks with the black spot off too?

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  • sherambersheramber Forumite
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    I have only seen blackspot on the leaves, not the stems.

    The fungus can lie on the soil around the rose so a deep mulch will cover it up.

    Have you given the roses a rose feed?

    I had blackspot on my roses last year but they flourished after I gave them a magnesium feed.
  • [Deleted User][Deleted User] Forumite
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    Yes, I have seen black lesions on the stems of my roses - you need to cut it all out & get the cuttings out of your garden (don't put them in your compost bin).

    I would second the idea of a thick mulch. Also, just be really vigilant about cutting off all infected leaves and stems and pick up any that do fall on the ground as soon as possible. Do a clear up over the Autumn leaf fall and try to avoid leaving the infected leaves on the ground (otherwise the spores will overwinter in the soil).

    Make sure you disinfect your secateurs afterwards.
  • sherambersheramber Forumite
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    When I sprayed my roses i also sprayed the ground around them in the hope of killing any spores lying there.
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