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Curled, crunchy leaves?
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Posted by
ycavaz 9A (
My Page) on
Wed, Sep 19, 12 at 13:14
| Some of my roses have leaves that are somewhat curled and crunchy and the undersides have brown spots. It reminds me somewhat of the citrus leaf miner.
The roses most affected get the most heat and sunlight. Is this normal? |
Follow-Up Postings:
RE: Curled, crunchy leaves?
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| I'm in the hills north of Los Angeles, between the West Side and San Fernando Valley. The intensity of the sun and heavy transpiration rates have fried a lot of plants' foliage this summer, both here and in the Santa Clarita Valley where I tend several gardens. Even without causing extra water stress from increased salts from fertilizing and without any chemical sprays applied to the foliage, many have curled, brown, crisp fried leaves. I'm not seeing any evidence of miner damage, though. Perhaps if you took some clear, close up photos and posted them, it might help others to assist you in making proper diagnoses? If you've sprayed any chemicals; or used systemics during the extreme heat, particularly with insufficient water; fertilized with insufficient water or your foliage had too much standing water on it from sprinklers or your hose when the sun and heat were at their most intense, it is highly likely your foliage was encouraged to burn from water stress and high heat/sunlight. Without appropriate photos to illustrate the specific symptoms you're inquiring about, any other suggestions would be a shot in the dark. Kim |
RE: Curled, crunchy leaves?
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| If the OP is in Florida, it might be chilli thrips, a very severe pest. Post sharp closeup pictures, or take a sample to the county agent's office. |
RE: Curled, crunchy leaves?
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| ^ That was my first thought. Sounds chilli thripy to me. |
RE: Curled, crunchy leaves?
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| I don't live in Florida but the pics of chilli thrip damage look just like my roses. Is it possible to get rid of them? BTW I live in Houston, TX |
RE: Curled, crunchy leaves?
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| I have them too, and so does everyone else around here right now. I've even seen chilli thrip damage on plants at the area nurserys. I sprayed spinosad (monterey garden insect spray) and it knocked them down quite a bit. There's still some light damage in my garden, but nowhere near as bad. Most new rose foliage is coming in clean. |
RE: Curled, crunchy leaves?
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| Thanks for the tip! My roses will be getting sprayed tomorrow. |
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