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Questions, Answers and Comments by Category
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Initial post
24 MAR 12 by
Re
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Hello,
Send photos of roses accented with problems (disease?). I hope I can be clear enough to be properly displayed and belong to a total of 5 plants (4 M. Carriere, and Bourbon Queen) all climbing plants, in pots for more than 50l. The leaves of Mme Careers are very loose and hanging, as you can see from the photos, even the buds are folding. Can you help me, already last year is a dead Mme careers with the same symptoms.
I look forward to a courteous much detail (if possible) feedback and advice on possible interventions to be made.
thanks
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Hmmm... it looks like several problems could be going on at once. Firstly, how much sun are these plants getting each day? 6+ hours or more/less. Secondly, how long have they been in their pots? Thirdly, have they been fertilized? Fourthly, are they getting enough water?
The leaves with the dark green veins look chlorotic. This could be a nitrogen deficiency. The others that are yellow to brown could represent a potassium deficiency. In either case, fertilizing with a balanced, quick release fertilizing product may help. Have you checked for insects? Spider mite damage can cause leaves to spot, yellow and look chlorotic also.
If the roses have been in the same pots for some years, they could be root-bound and starved. Additionally, they could be taking up water very quickly and drying out between wettings. If the plants are getting too little sun (less than 4-6 hours per day) they can also become spindly and bare. Once one problem starts, others can take hold more easily because the plants are stressed. Does any of this help?
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#7 of 11 posted
24 MAR 12 by
Re
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Meanwhile, thanks for reply, the two careers are inserted under an arch, the right is a plant that is potted for over 2 years and takes a sun for more than three hours a day this season (take 5 to arrive in summer) , and i think he has enough water, the Careers left, is potted from 6 months, has the same problem and it is in front (2m) to the other, does not take much sun (2 hours in this period but the rays do not arrive the vessel). Recently I started to give specific fertilizer. The problem of spiders has been a big issue in September 2011, one week I started to spray a pesticide specifically for spiders. If the leaves with dark green veins appear chlorotic and you refer to the last photo (Bourbon queen) even it had last year a major attack of spider mites. This winter already Mme Careers died with them the same symptoms.
Please give me some advice on how to intervene Tenedos realize that I am a novice with the roses. In addition, I would point out that I have another 70 roses (ht, te, and bourbon, etc.) that are in flowering and seem to sufficiently lush-
I await your kind a consultation,
thanks
Renzo
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I looked over the photos of other roses in your garden. They are beautiful!
Regarding the Mme. Carriere and Bourbon Queen, I would do this: if the pots are 50L size then they should be quite large enough for plants 2 years old or less. I would make sure the plants are positioned to get as much sun as possible, at least 4 hours. Mme. Carriere and Bourbon Queen are both somewhat more tolerant of shade than other roses but will perform best with more sun- 6+ hours would be optimal. I would continue to fertilize them regularly using a quality, water soluble blend made specifically for roses. I have noticed that my potted roses seem to perform better with more feedings than those that are ground planted.
I would aggressively treat the plants for harmful insects, especially mites. I am having a battle with spider mites on one of my potted roses here in North Carolina right now! The mites seem to prefer potted roses instead of those in the landscape. They can defoliate a potted plant in a few days. Several insecticide treatments over the course of 2 or 3 weeks may be necessary to kill them all. And usually, once spider mites have been a problem, they will come back. Vigilance is important to stay ahead of them. I would use a broad spectrum insecticide that is labeled to kill both the mites and their eggs as well as any other common rose pests. Mites lay eggs in the soil near infested plants so treat the soil, canes, blooms and both sides of all the leaves.
I hope this well help your roses. I grow Mme. Carriere and the Bourbon, Kathleen Harrop. I love them both.
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#9 of 11 posted
25 MAR 12 by
Re
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thans for the compliment, mine is unfortunately only a small garden. I'm afraid that can not be mites (alyhough i still processing) because the lives are green clear and clean, while last year when they were attacked b the spider was gray....
Today, as the advice, igave to the iron rose to fight some chlorosis. I hope that the two Carriere can recover as soon as possible and will post the photo of their location....
Thanks again for suggeriment and i'm sorry for my bad english....
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#10 of 11 posted
25 MAR 12 by
 Jay-Jay
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Good luck Renzo.
I use ground volcanic lava (Eifelgold) for suppleting essential minerals.
There are volcano's too in Italy. Maybe You can obtain some.
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#11 of 11 posted
30 MAR 12 by
Re
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Hi Jay-Jay there are volcano in Italy but there are long way, what about these leaves????
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#2 of 11 posted
24 MAR 12 by
Jay-Jay
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Did You feed them lime/calcium?
It could be a shortage in iron, when they got to much calcium.
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#4 of 11 posted
24 MAR 12 by
Jay-Jay
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Your reply makes sense too!!! I just wanted to add another possible answer/solution to the problem
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Ha, no worries. I was just agreeing with you on another issue I didn't think of. I ain't all that :)
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#6 of 11 posted
24 MAR 12 by
Jay-Jay
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I just forgot to mention that in the earlier reply, for it was that obvious/agreeable to me!
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