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#1
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Canes blacken and die
Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes,
flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? KB Missouri, USA p.s.. This is my first post here! -- |
#2
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Canes blacken and die
"K. B." wrote in message
... Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes, flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm Without knowing more about your situation, it's hard to diagnose. Sometimes roses just die. They don't adjust to being planted because they're weak to begin with. Or there's something in the soil that's not working for them. I've replaced a bunch of roses over the 6 years I've been actively growing them. Some thrive even if I ignore them, others die quickly no matter how much I coddle them. the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? I did a google search on black walnut and roses and found a discussion on GardenWeb: http://www.gardenweb.com/ Someone mentioned Black Walnut makes the soil more alkaline (I have no idea if that's true or not) and of course roses prefer an acidic soil, so maybe you should do a soil test before planting more roses in that area. KB Missouri, USA p.s.. This is my first post here! Welcome! Growing roses is a frustrating and rewarding experience, IMO. I've gotten a lot of help from the people here. But during the summer many people are so involved with their gardens they don't get online much. So be patient. If you don't get an answer right away, try again. Gail near San Antonio TX Zone 8 |
#3
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Canes blacken and die
"K. B." wrote in message ... Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes, flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? KB Missouri, USA p.s.. This is my first post here! Which roses did you buy, and where did you buy them from, and in what condition were they when you bought them? What was your soil preparation and how is it's drainange and pH? What have you sprayed them with and how often have you watered with how much? What has your fertilization program been? Did you check for vole damage to the roots? A lot more information is needed to even have a preliminary diagnosis. |
#4
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Canes blacken and die
"Sunflower" wrote in message ... "K. B." wrote in message ... Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes, flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? KB Missouri, USA p.s.. This is my first post here! Which roses did you buy, and where did you buy them from, and in what condition were they when you bought them? What was your soil preparation and how is it's drainange and pH? What have you sprayed them with and how often have you watered with how much? What has your fertilization program been? Did you check for vole damage to the roots? A lot more information is needed to even have a preliminary diagnosis. Thank you for taking the time to reply. KB |
#5
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Canes blacken and die
"K. B." wrote in message ... Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes, flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? KB Missouri, USA p.s.. This is my first post here! Which roses did you buy, and where did you buy them from, and in what condition were they when you bought them? What was your soil preparation and how is it's drainange and pH? What have you sprayed them with and how often have you watered with how much? What has your fertilization program been? Did you check for vole damage to the roots? A lot more information is needed to even have a preliminary diagnosis. |
#6
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Canes blacken and die
"K. B." wrote in message
... Planted 2 Hybrid Teas and a climber this spring. The HT grew into canes, flowered once and then wilted to death. The leaves wilted first, slowly, as though they were not getting water. The canes then turned black. I read the Post by Josephine about the wilting buds and the Rose Midge. According to sources on the internet, the Midge causes leaf damage, not damage to the canes. What would cause the un-damaged canes to blacken back to the bud union and die? Rose canker might be likely but I have no experience with it: http://www.sactorose.org/ipm/83canker.htm Without knowing more about your situation, it's hard to diagnose. Sometimes roses just die. They don't adjust to being planted because they're weak to begin with. Or there's something in the soil that's not working for them. I've replaced a bunch of roses over the 6 years I've been actively growing them. Some thrive even if I ignore them, others die quickly no matter how much I coddle them. the climber had the same thing on several canes but has survived. BTW I have Black Walnut trees on my lot and they are known to be harmful to many ornamentals, but Rose is not one of the species mentioned. Any comments? I did a google search on black walnut and roses and found a discussion on GardenWeb: http://www.gardenweb.com/ Someone mentioned Black Walnut makes the soil more alkaline (I have no idea if that's true or not) and of course roses prefer an acidic soil, so maybe you should do a soil test before planting more roses in that area. KB Missouri, USA p.s.. This is my first post here! Welcome! Growing roses is a frustrating and rewarding experience, IMO. I've gotten a lot of help from the people here. But during the summer many people are so involved with their gardens they don't get online much. So be patient. If you don't get an answer right away, try again. Gail near San Antonio TX Zone 8 |
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