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Tue, Jun 23, 09 at 14:41
| Most of my roses have new leaves that are curled / gathered / warped looking. It appears as time goes on they flatten out. Is this normal?
I don't spray and have a minor amount of aphids. We have been hit with 2 weeks of cold, wet weather.
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Follow-Up Postings:
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| It's not normal. Had any powdery mildew? It can cause waviness and curling, but I don't see any PM. Deformed new leaves along with death of growth tips can result from severe nutrient imbalance-- for example, calcium deficiency can cause hook-shaped leaves like the one at 3 o'clock in picture #2. Has this shoot lost its growth tip? I'm very familiar with the aftermath of aphids, and this does not look like that. |
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| No, I know every sort of powdery mildew damage, and this doesn't look like that. Rose Spring Dwarf Disease??? Jeri |
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| Jeri, he said it was on most of the plants, and I don't think that could be the case with RSD, which as you know is a rather uncommon virus disease. I'm sure you must be right in ruling out mildew. It doesn't look quite like it to me either, the severe cupping and pleating. |
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| I get leaves like that sometimes when it is cold. Could just be stunted from the cold? |
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- Posted by canadian_rose zone 3a (My Page) on Tue, Jun 23, 09 at 21:02
| I agree with Buford. My first thought was big deal :) I've seen that lots of times. IMHO it is from the cold. Carol :) |
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- Posted by roseblush1 09/Sunset 7 (roseblush1@aol.com) on Wed, Jun 24, 09 at 19:06
| I agree with Carol. I have seen it show up on several roses, not all, and I just remove the leaf. I have a hunch it's some kind of insect that layed some eggs. Since the leaf is wrinkled, it can't do it's work of photosynthesis, so i just take it out. If it is a bug, the bug is gone, too. Smiles, |
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| Thanks all. I think it is either the cold snap we got or the aphid patrol by hand that I did when the leaves were very small. The bushes are doing fine otherwise so I'll leave nature be. |
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- Posted by susan9santabarbara z9coastalCA (My Page) on Thu, Jun 25, 09 at 23:29
| I saw some of this type of damage on some roses about 3-4 weeks ago when we were in the throes of a major thrips invasion. I have seen this leaf damage in previous years as well. It was also cooler than average, which I think intensifies the damage from thrips b/c it takes longer for the blooms and new leaves to unfurl. Just a hypothesis! It's definitely not Rose Spring Dwarf Disease or Powdery Mildew on my plants. Thrips are a year-round presence for me nowadays, but there are definite peaks of their activity, and interestingly this coincided with major thrips damage on my blooms. Susan |
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- Posted by Asyncritus(htwfmol@hotmail.com) onSun, Jul 31, 11 at 16:01
| Mine are crinkling, on Etoile de Holland and some on Zephirine Drouhin. The weatherherehasbeen beautiful really - no cold snaps, nuthin. The leaves don't look mildewed. Still baffled. |
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