Ask a Question forum: Knock Out Rose is sick

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sew2grow
May 6, 2016 10:53 AM CST
My rose was in full bloom with beautiful healthy looking leaves and beautiful roses for a couple of weeks. Then i noticed patches of brown leaves appearing on it, and in one week the whole bush has brown crispy leaves and wilted, droopy roses. This happened last year and i thought my husband had gotten too close while applying weed killer. I trimmed as many of the brown leaves off as i could and eventually my rose put back out and bloomed again but not as much as it should have.This year i know that my husband did not use any weed killer near it so it just has to be a disease or a bug. The brown almost looks like rust but i'm not sure. We have been having warm and cool weather with some rainy days. Alabama always has changeable weather. That might affect it.

Please email me back and let me know if you have an idea for me to help my sick rose. Any help would be greatly appreciated.

Thank you so much for your help.

Nell Herrero
Name: Sandi
Austin, Tx (Zone 8b)
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Bubbles
May 6, 2016 1:33 PM CST
It's difficult to give advice without knowing where you live. That said, here in Texas we are dealing with a disease called rose rosette. Below is an article about the disease and its spread. I truly hope that isnt what is affecting your rose.

http://www.usatoday.com/story/news/nation/2014/04/10/rose-ro...
Name: Sue
Ontario, Canada (Zone 4a)
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sooby
May 6, 2016 2:06 PM CST
sew2grow said:......any weed killer near it so it just has to be a disease or a bug. The brown almost looks like rust but i'm not sure. We have been having warm and cool weather with some rainy days. Alabama always has changeable weather. That might affect it.


:welcome: Nell. Roses can get rust diseases but I don't know how prevalent that might be in Alabama. It would help us try to diagnose the problem if you could post a picture of the whole plant and also of the affected leaves. If you can't do that and nobody else here can figure out the problem, the American Rose Society has rosarians who are willing to help by email, and there are three listed for Alabama on this link:

http://www.rose.org/rose-growing-question/rosarian/

Edited to add, there is also a Roses Forum on this site so you may want to post your question there.



[Last edited by sooby - May 6, 2016 2:09 PM (+)]
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Name: Sandi
Austin, Tx (Zone 8b)
Texas Gardening
Forum moderator Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Plant Identifier Master Gardener: Texas
Region: Texas Tropicals Plumerias Ferns Greenhouse Garden Art
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Bubbles
May 6, 2016 3:45 PM CST
@sew2grow I completely missed "Alabama" in your post above. *Blush* You still may want to check out rose rosette disease. You can also Google "Witch's Broom" for photos of the ends of the stems.


http://news.aces.edu/blog/2016/01/28/rose-rosette-disease-wi...
Name: Zuzu
Northern California (Zone 9a)
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zuzu
May 7, 2016 12:20 AM CST

Plants Admin

Brown crispy leaves can also be caused by fertilizer burn. Have you fertilized (over-fertilized) that rose lately?

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