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| Could anyone here explain the difference between the two causes of damage to a rose. I just pulled out a beautiful rose, but wonder if I made a mistake. When I see the red growth, and tightly grown leaves on a stem that is larger than the stem it comes from, I get rid of the rose. How can we tell if it is Round Up, and the rose will recover? (I understand that many here have opinions against using Round Up, but I would like to save that discussion for another thread. Thanks.) Thanks |
Follow-Up Postings:
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| From what I've experienced, RU damage shows stunted growth, wispy like leaves not usually red. RRD shows very aggressive growth, rubbery like canes, distorted buds. Also, as you have noticed, the RRD growth is larger than the cane it comes from. Here is a picture of a 'no doubt' RRD:
Here is one I found early, removed the cane, and still have the rose:
Here is one I had this year. The middle cane is normal, the one's on either side have RRD:
Here is a picture of what I believe is RU damage. I know I used some near this rose. I still have the rose, and it's never shown any RRD type symptoms. There was one cane, towards the front that has very wispy leaves:
I have seen some pictures of RU damage that can look more like RRD, but I haven't seen it in my yard. |
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| Buford's pictures capture the typical differences, as best I understand. However, broadleaf herbicides that are often used by mow and blow guys can produce overgrowth resembling RRD symptoms. |
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| Thanks, Buford and Michael. The growth was on the back where I had used Round Up, but the stem was red and larger than the one it came from. It had not been growing long enough to form buds, but the "close together" red leaves unlike any other rose in my garden concerned me. It is such a shame, too. The rose was Miss Caroline with blooms that were a beautiful pink color, and the blooms formed points. It is a sport of Duchesse de Brabant, but more delicate and so pretty. I have another, and will just have to order more, I guess. It does take three years for these roses to really begin to look pretty. Sammy |
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| If I remember correctly, Ann has said in the past that she looks for THREE RRD symptoms before she declares it as being RRD. Don't know if that helps you or not. Kate |
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| I've often observed stems of healthy roses that are slightly thicker than the underlying stem. This is fairly common if you just snap off spent blooms of modern bush roses. The typical look of roses with RU toxicity is stringy leaves and strap-like, curly overgrowth of stipules (base of leaf). Probably it varies according to the dose, though. |
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| Sammy, if you just have that one symptom, similar to my second picture, you can try taking that cane out at the base and see what happens. It's possible the virus hasn't reached down that far yet. |
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| Buford, it is like the top part of the second rose that you show. The cane was larger than the one it came from, and there were about 4 separate clumps of red leaves similar to the top part of your second picture. I guess I should not have pulled out the rose. It is at the end of a bed near the electric box where I always spray. The cane was only about a foot long, and by being larger, I felt it would be infected. I really appreciate all of your input. It is nice to know that Ann waits for more than a couple of symptoms. Sammy |
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- Posted by henry_kuska z5 OH (kuska@neo.rr.com) on Sun, Sep 21, 14 at 22:12
| I received this today concerning rose rosette virus in Tulsa Okaloma. https://www.facebook.com/tulsaworld/posts/10152403218101446 |
Here is a link that might be useful: Tulsa World article
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| Henry, thank you so much. I did not see the article, and have been very disappointed in what has happened to our rose garden in Tulsa. I even went to a Rose Society meeting there last week, but the devastation of the garden never came up. I am so glad that they are going to upgrade it for handicap access. Possibly in years to come it will again be a beautiful attraction in our park. Sammy |
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