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rootdoctor

Leaf curling

18 years ago

There are many posts concerning leaf curling. Heres what I have found.

Most of the leaf curling I have dealt with was caused by a lack of available magnesium, wild PH swings, crazy nutrient adds, or a combination af the above. When transplanting from 1 gallon into larger pots, I am using a much "hotter" organic mix, and sometimes the plants "squirm" for a week or so until settled into their new home. Normal. I have cured any later season curling by adding a handful of prilled dolomitic lime to the top of the pot, and watering it in. Pot size, and rootbound can also contribute or exxagerate the curling as well. I have some devils tongue habs that seemed to need much more "N" earlier on, and when added in with a combination of sandy limestone and some dolomitic lime, curled for a week, the returned to a darker green, no more yellow leaves or leaf drop. Remember, all chili plants are a little different in their nutrient needs, some much more different, so you may need to tailor make your nutrient mix to suit different needs. I have also started top dressing with a handful of worm castings and alfalfa pellets and since have not seen any curling at all, where as last year, I dealt with it for the entire year to some extant.

Good luck!! TiMoTeO

Comments (8)

  • 18 years ago

    rootdoctor, what do you think of these photos? There is definate leaf curl on these Bell Peppers, although not chilis. These are all planted in the ground. I have been using Hasta gro (6-12-6) and compost. So there hasn't been any wild nutrient swings. Do you think I need to add Epsom Salt? The Jalepeno pepper in the same row looks fine.

    Sorry, the pictures are a little blurry.

    Dean
    {{gwi:1189149}}
    {{gwi:1189150}}
    {{gwi:1189151}}

  • 18 years ago

    Don't forget the other cause is damage caused by Thrip feeding...newest growth is always affected.

  • 18 years ago

    Get a bag of prilled dolomitic lime, available anywhere for 2-5 bucks for a 30-50 lb bag. Put 1/2 cup scattered around the rootline in soil and water it in. Look at the color difference in your leaves, and the veins. That is one clue.

  • 18 years ago

    vera: What are the "fixes" or anything at all to keep Thrips under control? I've tried 2 different pesticides (Liquid Sevin & Ortho Max 100), soap water, vinegar around pot lining, etc., etc....all with not much luck at all. I'm down to 3 out of 8 hot pepper plants still living, soon to be 2. Please let me know what the best way is to get rid of those dern things! I'm running a fall crop of peppers since spring crop is almost dead, so I'd definitely like to know soon.:-(

  • 18 years ago

    rootdoctor, do you think I would have to add some Iron to the soil instead? My soil is already alkaline.

  • 18 years ago

    re: rootdoctor:
    "Look at the color difference in your leaves, and the veins. That is one clue."

    Are pale veins in a darker leaf an indication of something? I consider this jalapeno leaf to be "healthy". Am I missing a clue?

    {{gwi:1189152}}

  • 18 years ago

    That is a healthy leaf. If you look at the photo above, one of them has a yellow "shading" that is visible around the veins. Most veins are either a lighter or darker color in plants, that is the "vein or blood network" of the plants. Your plant is healthy and looks great. TN veggie gatdner, try to mulch around your plants with a denser matting, I use grass. Neem oil is an organic oil that helps with aphids, thrips, most others, but unfortunately it plays havic with the beneficial bugs as well. I don't use any insecticides besides neem oil though. You could add a small amount of iron, but adding anything to a problem usually makes the problem worse Ive noticed. Worm castings and alfalfa meal scratched into the soil and watered in would be a good buffer. Good luck. TimO

    Are your peppers showing pinholes in the leafs and dying from that? I have thrips every year until the beneficial bugs take over. The holes are ugly, but have never taken one of my plants down. Plant some dill around your peppers and the ladybugs will come.

  • 18 years ago

    Thanks rootdoctor. I'm trying to put together a photo gallery of leaf problems and (hopefully) solutions. It's a work in progress.

    Here is a link that might be useful: Leaf gallery

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