Rosette disease


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Welcome doubledelight. :)

I'm pretty certain it's rosette disease and there's nothing you can do to cure it, sorry!

https://www.gardeningknowhow.com/ornamental/flowers/roses/rose-rosette-disease.htm

If you have any other roses I would suggest keeping an eye on those in case it's been passed on. Looking at your picture suggests the bed has been mulched. To help resistance to disease and bugs, roses are best planted in bare soil with good spacing between them.
 
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Oh, I'm so sorry to tell you that that rose is toast. Dig it up, toss it in the garbage (do not compost it!) That is rosette, otherwise known as Witch's Broom. Don't plant another rose in its place.
Sheal is right--get rid of the mulch (again, toss it in the garbage since it may be harboring the virus).
As of now, there is not cure for Rosette. As a rose lover, I understand how harsh this advice seems.
 
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Thanks for your quick reply!
It may be rrd and if it is I will follow your advice.
But now after searching the web, I think there is another possibility.....I sprayed roundup on some Bermuda in an adjacent parking area earlier, trying to be very careful about keeping it away from the roses.
I think that despite that I still got some spray drift onto the roses . Apparently roses are very sensitive to roundup.
Google images of roundup damage look VERY similar. They are not dead so if that is the case they may recover. Do you think I should cut them back or just leave them alone until early spring?
 
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Leave them alone. If any plant is under stress there is no need to stress it further.

If it is rosette, I might have a direction you could look, but I am a rose rookie.

Many fungi and virus and other pathogens have developed the ability to control the cells of a plant to support their own purpose. This cell control is chemical in nature and I suspect hormonal in practice. Perhaps someone in rose world is working on a hormone therapy. It would not suprise me, given the market for such things. Also, I have read about heat treatments for some diseases of rose, whereby a nursey can guarantee a disease free plant. Black spot (I think) was one and someone in rose land may be working on something similiar for rosette. There is a mortality rate with the treatment though.
 
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