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Yellow spot and holes in rose petals...help!


 
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Coillte
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 25 May 2009
Posts: 8
Location: Dublin

PostPosted: Sun Aug 23, 2009 12:40 pm    Post subject: Yellow spot and holes in rose petals...help! Reply with quote

Hi there,

I planted a couple of rose bushes from Lidl and they seemed to be doing well but now the leaves are pretty well covered with yellow spots and holes, in the center of the leaves.

I read about black spot but this is yellow spot! Any ideas what it might be and how to treat it? I would be very grateful. I feel very sorry for the roses...first the lousy weather and now this Crying or Very sad

Please see attached image of this blight!

cheers coillte[/img]



my poor roses.jpg
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my poor roses.jpg


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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Sun Aug 23, 2009 7:07 pm    Post subject: Reply with quote

picture not great but from the description and the weather we have been having it is rose rust and it will have a debilitating effect on the flowering next year. the rootstock has a big influence on it's occurrence (rosa laxa is the worst rootstock for the disease but all get it in a bad year. Rose clear should help and gather up and burn any diseased leaves.
michael brenock horticultural advisor (retired)
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Coillte
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 25 May 2009
Posts: 8
Location: Dublin

PostPosted: Sun Aug 23, 2009 8:17 pm    Post subject: Reply with quote

Hi Michael,

you're right, the picture quality is not great. So roses can rust too!!! Well, I never. Honestly! Thank you for telling me that. I thought it was some tropical version of black spot disease!

I'll pop down to the local Woodies and see if I can get some of that Rose Clear stuff. It's a pity about next years roses...I'll have to do some reading up on roses to avoid more pitfalls.

many thanks Michael,

coillte
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