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yellow leaves on a new rose
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Posted by acmesarah 7A (My Page) on Sat, Sep 18, 04 at 10:27
| We planted a new bush last month (a supposedly hardy hybrid--sorry, but I don't remember the name). At the time some of the leaves were curling under, but I attributed it to water stress since the weather had been dry. The curling leaves are still there and now about 20% of them are yellow starting low on the canes and seemingly moving up. We are in the middle of our typical mild fall here on Long Island, so I don't think it's shutting down for the winter. In the interest of full disclosure, the bush is planted over our recently departed hamster, so there could be some air pockets in the hole. I sprinkled in some epsom salts when I did the digging.. What's going on and how should I treat it? I would prefer not to dig the rose up, owing to the aforementioned hamster. Would a banana or coffee grounds help? Fish Emulsion? |
Follow-Up Postings:
RE: yellow leaves on a new rose
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| Curling leaves could be a virus (uncommon) or a nutrient deficiency. The defoliation is from blackspot disease, if there are black spots. "Hardy" means cold-tolerant, not anything else. If your rose survives the winter, next year give it a complete fertilizer such as Rose Tone every two months and water thoroughly once a week. You may need to do something to prevent blackspot, or get a more resistant variety. |
RE: yellow leaves on a new rose
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| Could be transplant shock. How much are you watering (probably not needed much this past Friday/Saturday, but...)? |
RE: yellow leaves on a new rose
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| The yellow leaves are returning to normal though they still curl downward. The variety is something called "knockout" which the salesperson said was resitant to blackspot. We've had many inches of water in the last month (like everyone on the east coast) and the area is on a sprinkler. I've also added some coffee grounds. Hopefully it was just a transitional problem. |
RE: yellow leaves on a new rose
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| Knock Out is very resistant to black spot, but it is not immune. Glad to hear that it's coming back. It's pretty much an easy care rose, but buying it this late in the season says that it probably was a bit stressed anyway. Should be fine soon, but don't fertilize with anything until next spring. |
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