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Blackspot

Discussion in 'Roses' started by wiseowl, Feb 10, 2013.

  1. wiseowl

    wiseowl FRIENDLY ADMIN Staff Member

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    Good morning I am going to start my blackspot prevention early this year(well earlier than I usually do it) its raining to day so on the next dry day I am going to spray the leaves and soil, as an experiment to see what results are forth coming:)
     
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    • Phil A

      Phil A Guest

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      Are you still allowed to use sulphur Woo, or is that on the banned list now?
       
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      • Hannah's Rose Garden

        Hannah's Rose Garden Total Gardener

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        I am starting on the 15th :) I am using rose clear
         
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        • wiseowl

          wiseowl FRIENDLY ADMIN Staff Member

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          Good morning Zigs to be totally honest I only think it is Ok but I am not 100% sure my friend,I will investigate it further:)

          But I did come across this on my flying travels:heehee:

          Bordeaux Mixture
          A mixture of copper sulphate and hydrated lime, which is available as a wettable powder, for use as a spray or a dust. Controls blight on potato and tomato; celery leaf spot; apple canker; bacterial canker on cherry and plum;
          peach leaf curl; black currant and gooseberry rust.

          Limitations: Harmful to livestock which should be kept out of treated areas for at least three weeks. Toxic to fish.
          Some cultivars may be damaged; if in doubt check a small part of the plant first.
          Wettable powder: Bordeaux Mixture (Vitax)

          Bordeaux Mixture will be withdrawn from sale on 28 February 2013 but any person can use and store existing stocks until 28 February 2015.
           
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          • Phil A

            Phil A Guest

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            I've already got a stockpile Woo:dbgrtmb: Mind if I put your reminder up as a separate thread too?
             
          • wiseowl

            wiseowl FRIENDLY ADMIN Staff Member

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            No worries my friend you have the freedom of Kent and lifelong free membership to all the Owls in the UK including yours truly:dbgrtmb:
             
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            • Phil A

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            • Sheal

              Sheal Total Gardener

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              Woo,
              Some advice if you would please. :) If you remember it's a long time since I've had roses and this will be my first season with roses in my present garden. Do you think it is advisable to use black spot prevention, as I was thinking about leaving the roses this year to see how they cope without it, obviously if they show any signs then I will think again.
               
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              • wiseowl

                wiseowl FRIENDLY ADMIN Staff Member

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                Good morning Sheal the choice is difficult for you,any treatment is only for prevention and not cure,so if you leave your roses and they do get blackspot it will be to late,on saying that my personal opinion is that I would leave them and take a chance as its their first year,that way you will have a good idea what to do next year my friend,this is only what I would do and not the advice most other's would give you,whenever I get a new Rose I leave it for the first year but it is a gamble:)
                 
              • joolz68

                joolz68 Total Gardener

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                Im going to use neem oil,
                may help ..may not :dunno:
                 
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                • ARMANDII

                  ARMANDII Low Flying Administrator Staff Member

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                  Sorry, Woo, we're behaving like Muppets.:cry3:

                  I treat my roses with Rose Clear, when the buds started to burst, and continue to spray in the late evening to avoid Bees and the like. However, when the Bees became active right in the evening I stopped and the Black Spot appeared quite quickly although not really affecting the plants.:coffee:
                   
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                  • Sheal

                    Sheal Total Gardener

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                    Woo, thank you, I think I'll risk it this year. I also live on the coast and I'm wondering if the salt air will make any difference to keeping blackspot at bay. Trial and error I think and I won't find out unless I try it. :)
                     
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                    • Dave W

                      Dave W Total Gardener

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                      The years when I've had the least blackspot have been those when I've started spraying just before bud burst. We've just started spraying.
                      Have my doubts about using neem oil (as per joolz) as its main use is for reducing insect damage rather than bacterial infection.
                       
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                      • wiseowl

                        wiseowl FRIENDLY ADMIN Staff Member

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                        Good morning all,its nice to get everyone's input and ideas from all over the UK and and all the different methods and treatments that you all use,thank you :dbgrtmb: :)
                         
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                        • joolz68

                          joolz68 Total Gardener

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                          I doubt it too dave but after reading this ..http://www.colonialdistrictroses.org/id46.html
                          Im not sure you can prevent blackspot but ive read Rose Defence is mostly neem oil and a bottle of pure neem oil goes a long way:) x
                           
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