rose virus?

16 years ago

Hi everyone:

I am having a problem with two roses which are next to each other. Mrs. B.R. Cant & Mons Tillier. The leaves are dying,(new leaves) turning brown, dry and the cane dies.

I have checked my rose book for the problem but can't find it. I did a google search using the "symptoms" and the only thing I found was a virus, (rose leaf curl virus) It isn't mosiac, because the leaves don't look like mosiac.

I'm in the Tampa Bay area of Florida. I don't want to leave these roses in and possibly harm my other ogr.

Has anyone had this problem or know what it is? I'm getting concerned and ready to dig these roses up.

A friend told me if I dug them up I shouldn't plant another rose in that spot for a couple years. Is that correct?

Thanks for any help.

Diana

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Comments (6)

jerijen
16 years ago
How old are the roses?
How long have they been in that place?
What has your weather been like?
Are the canes dying from the top down, or from the bottom up?

Rose leaf curl virus wouldn't kill canes like that.
You are PROBABLY dealing with a fungal disease or bacterial canker, OR the effects of environmental conditions -- but it would be impossible to diagnose, or even begin to try to do so, without seeing the damage.

Jeri
zone9fl
Original Author
16 years ago
Thank you for your reply.

The roses were planted in Oct/2007. We had an unusually cold winter, several freezes. The canes are dying from the top down. Doesn't seem likely our winter would still be affecting the two roses.

Weather conditions now are typical Florida, hot and humid. My other roses appear to be doing fine.

Diana
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michaelg
16 years ago
There is a rare bacterial blight or wilt disease that is similar to fireblight of cherry. New growth is streaked with black, tips wilt, canes die back. On older, lower cane sections there are oozing sores. Search "bacterial blight of rose."

Unless you think it's that, I would not remove the plants out of fear of contagion. Occasionally, roses die back mysteriously, but some of these will survive.
anntn6b
16 years ago
Because you're in Florida and because Florida roses have had major problems with a new pest called Chilli Thrips, you need to consider them as a possible problem. Good nurseries in the Tampa area do know chilli thrips, I asked about them last time I visited down there and there's a lot of local knowledge as well as several good websites easily googled.
malcolm_manners
16 years ago
Ann, On other roses, I'd be first to agree. But Mrs. B. R. Cant is so resistant as to be nearly immune. So I doubt that is the problem. OTOH, I have no idea at this point what the problem may be. We need photos!
anntn6b
16 years ago
Malcolm,
Thanks for the reminder about Mrs. Cant. Could the disease pressure from the adjacent rose be enough to tip the scales on her resistance to the disease?

About pictures: if you don't have a great camera, you might have a pretty good scanner and a few scanned leaves might tell a lot.
I've even scanned some rose stems at finest/highest pixels possible, and it's a substitute for having a microscope, esp for critters smaller than aphids.