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#1
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Oh dear - witches broom on my Old Blush climber
Yes, dear friends, I have witches broom on my rather extensive and
sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. |
#2
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Oh dear - witches broom on my Old Blush climber
dave weil wrote:
Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Dave, this is just sickening. That is unmistakably Rose Rosette Disease or "Witch's Broom" as you mentioned. There is a great deal of information on this at Gardenweb, you can do a search. I think you have to get it out of there and burn it, and I am pretty sure your other roses may be in danger. Do you have any multiflora around? Do you know what it looks like? I have mistaken it for blackberry--which is in the same family. It makes masses of sweet-smelling, tiny white blooms. It is the rose that carries this mite-born disease. I'm so sorry you have this in your nice garden, Dave. |
#3
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Oh dear - witches broom on my Old Blush climber
On Thu, 13 Nov 2003 18:25:10 -0500 (EST), "Shiva"
wrote: dave weil wrote: Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Dave, this is just sickening. That is unmistakably Rose Rosette Disease or "Witch's Broom" as you mentioned. There is a great deal of information on this at Gardenweb, you can do a search. I think you have to get it out of there and burn it, and I am pretty sure your other roses may be in danger. Do you have any multiflora around? Do you know what it looks like? I have mistaken it for blackberry--which is in the same family. It makes masses of sweet-smelling, tiny white blooms. It is the rose that carries this mite-born disease. I'm so sorry you have this in your nice garden, Dave. You know, I did a little research and I might just have an out (maybe). Apparently, a similar type of growth can be seen resulting from herbicide damage, specifically Roundup for one. While I haven't used any Roundup in the area that I can remember, this is the plant that had some damage from the NEEM oil that I sprayed on it in the early summer. Some of you who have been around a while remember when I reported that. The plant got purple bruising at the time. I wonder if this could be the cause? Anyone know how to distinguish rosette from herbicide damage growth? I saw some messages where they talked about it, but I wasn't able to figure out what to look for. I'd appreciate any guidance... |
#4
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Oh dear - witches broom on my Old Blush climber
In article , dave weil
wrote: On Thu, 13 Nov 2003 18:25:10 -0500 (EST), "Shiva" wrote: dave weil wrote: Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. I'd appreciate any guidance... I'm not sure what you have, Dave. Contact Ann Peck by email. She has been fighting rosette for a while now. She can tell you here approach, including spraying for the mite with Cygon, I believe, cutting out the blight, and what to watch for. http://web.ntown.net/~apeck/index.htm Ann posts at Gardenweb. |
#5
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Oh dear - witches broom on my Old Blush climber
On Thu, 13 Nov 2003, dave weil wrote:
Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Hi Dave, You may not have to remove the entire bush. Have the symptoms just recently appeared and have you just noticed the disease on this one cane? You may be able to save your rose by removing entirely the one infected cane - burn it or wrap it tightly in plastic before throwing it out. If it is too late to save the rest of the plant, you will know soon enough as this disease spreads rapidly. If you notice any more symptoms after removing the one infected cane, you will have to remove the entire plant, disposing of it as described above, or your other roses will be at serious risk. The problem after that remains concern over the mite (Phyllocoptes fructiphilus) that transfers rose rosette. It is not affected by traditional miticides. You must use a systemic insecticide/miticide containing dimethoate, not an attractive option if you are an avowed "no spray" person. You have my deepest sympathies as this is definitely a dagger in the heart of anyone who grows roses. I'm going to hope you caught it in time to save your valuable mature climber. Mike |
#6
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Oh dear - witches broom on my Old Blush climber
On Fri, 14 Nov 2003 04:39:00 GMT, Mike wrote:
On Thu, 13 Nov 2003, dave weil wrote: Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Hi Dave, You may not have to remove the entire bush. Have the symptoms just recently appeared and have you just noticed the disease on this one cane? You may be able to save your rose by removing entirely the one infected cane - burn it or wrap it tightly in plastic before throwing it out. If it is too late to save the rest of the plant, you will know soon enough as this disease spreads rapidly. If you notice any more symptoms after removing the one infected cane, you will have to remove the entire plant, disposing of it as described above, or your other roses will be at serious risk. The problem after that remains concern over the mite (Phyllocoptes fructiphilus) that transfers rose rosette. It is not affected by traditional miticides. You must use a systemic insecticide/miticide containing dimethoate, not an attractive option if you are an avowed "no spray" person. You have my deepest sympathies as this is definitely a dagger in the heart of anyone who grows roses. I'm going to hope you caught it in time to save your valuable mature climber. Mike Mike - thanks for the advice. Same goes to Cass. I've contacted Ann Peck and am hoping for an answer soon. I'm really hoping for the NEEM oil abuse scenario. I'd really hate to lose this plant, not only because it will leave my fence bare, but it will be a real mess to remove. Plus, I'm quite fond of it as it was my first rose planting. Here's a question about the mites (if it turns out that this is indeed Rosettes). Should the first frost have taken care of them (last night we got our first deep frost)? If so, can I assume that my upcoming dormant spray application would also take care of them until spring? |
#7
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Oh dear - witches broom on my Old Blush climber
Dave if it is RRD my commiserations.
Around here it is a rural disease and will absolutely decimate entire stands of roses. Though it seems really surprising that you have it. RRD mites spread by wind so there has to be continous trail of roses within a few hundred yards all the way from your garden to the rural infection. In KC the surrounding prairie is absolutely swarmings w/ infected Multiflora but disease inside the city is almost unknown. The other thing that surprised be is the 'witches broom' had buds and blooms on them. Never thought that was possible. The real bummer if it is RRD is that you not only must find the plants in you garden that are infected but also the ones in the neighbhorhood that brought the disease to you. Those need to be exterminated as well. Heres to hoping its NOT RRD. -- Theo in KC Z5 "dave weil" wrote in message ... On Fri, 14 Nov 2003 04:39:00 GMT, Mike wrote: On Thu, 13 Nov 2003, dave weil wrote: Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Hi Dave, You may not have to remove the entire bush. Have the symptoms just recently appeared and have you just noticed the disease on this one cane? You may be able to save your rose by removing entirely the one infected cane - burn it or wrap it tightly in plastic before throwing it out. If it is too late to save the rest of the plant, you will know soon enough as this disease spreads rapidly. If you notice any more symptoms after removing the one infected cane, you will have to remove the entire plant, disposing of it as described above, or your other roses will be at serious risk. The problem after that remains concern over the mite (Phyllocoptes fructiphilus) that transfers rose rosette. It is not affected by traditional miticides. You must use a systemic insecticide/miticide containing dimethoate, not an attractive option if you are an avowed "no spray" person. You have my deepest sympathies as this is definitely a dagger in the heart of anyone who grows roses. I'm going to hope you caught it in time to save your valuable mature climber. Mike Mike - thanks for the advice. Same goes to Cass. I've contacted Ann Peck and am hoping for an answer soon. I'm really hoping for the NEEM oil abuse scenario. I'd really hate to lose this plant, not only because it will leave my fence bare, but it will be a real mess to remove. Plus, I'm quite fond of it as it was my first rose planting. Here's a question about the mites (if it turns out that this is indeed Rosettes). Should the first frost have taken care of them (last night we got our first deep frost)? If so, can I assume that my upcoming dormant spray application would also take care of them until spring? |
#8
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Oh dear - witches broom on my Old Blush climber
In my humble opinion, based upon the photo links in the original message,
this is NOT Witches Broom. It appears to be something that has desicated a limited area of the plant and the photos don't show the characteristic deformities of Witches Broom. I hope that what you are experiencing is a result of the neem application you referenced. I would NOT worry any further about mites this season and wait until next spring to apply miticide again. Simply my $0.02 worth, good luck! Tim |
#9
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Oh dear - witches broom on my Old Blush climber
On Fri, 14 Nov 2003, dave weil wrote:
On Fri, 14 Nov 2003 04:39:00 GMT, Mike wrote: On Thu, 13 Nov 2003, dave weil wrote: Yes, dear friends, I have witches broom on my rather extensive and sprawling Old Blush climber. Here's the evidence. http://www.pbase.com/image/23272504 http://www.pbase.com/image/23272556 I'm rather down about it at the moment. I'm assuming that this 20 foot rose bush has to go, right? Please, somebody tell me I'm wrong. Please. Hi Dave, You may not have to remove the entire bush. Have the symptoms just recently appeared and have you just noticed the disease on this one cane? You may be able to save your rose by removing entirely the one infected cane - burn it or wrap it tightly in plastic before throwing it out. If it is too late to save the rest of the plant, you will know soon enough as this disease spreads rapidly. If you notice any more symptoms after removing the one infected cane, you will have to remove the entire plant, disposing of it as described above, or your other roses will be at serious risk. The problem after that remains concern over the mite (Phyllocoptes fructiphilus) that transfers rose rosette. It is not affected by traditional miticides. You must use a systemic insecticide/miticide containing dimethoate, not an attractive option if you are an avowed "no spray" person. You have my deepest sympathies as this is definitely a dagger in the heart of anyone who grows roses. I'm going to hope you caught it in time to save your valuable mature climber. Mike Mike - thanks for the advice. Same goes to Cass. I've contacted Ann Peck and am hoping for an answer soon. I'm really hoping for the NEEM oil abuse scenario. I'd really hate to lose this plant, not only because it will leave my fence bare, but it will be a real mess to remove. Plus, I'm quite fond of it as it was my first rose planting. Here's a question about the mites (if it turns out that this is indeed Rosettes). Should the first frost have taken care of them (last night we got our first deep frost)? If so, can I assume that my upcoming dormant spray application would also take care of them until spring? Dimethoate is the only proven treatment for a rose that already harbors this particular mite. A clue that this is rose rosette (as opposed to a reaction to spraying) is if the stems are covered in long soft rubbery prickles. Mike |
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