Leaf Curling And Browning And Being Eaten Follow Up

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You had suggested the last time that I use neem on my Mexican key lime tree and it seems to have helped some but not 100%. I have also used it on my Crepe Myrtle (leaves being eaten) and my Arizona Ash (also eaten leaves) and it seems to have helped but does not work 100%. I follow the label instructions. Any other suggestions? Thanks for all your help.

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Answer #2 · Rafael Flores's Answer · I took some samples of my leaf problems to my local nursery. They are not certified gardeners or nursery people but they suggested I use malathion on my problem with this lime tree. First they said it was snails and or slugs and I actually had a small insect that was alive but they could not tell me what it was. I also showed them one set of leaves that had some type of spider web on it with a dead fly in it. Long story short, do you favor my using malathion on it or is there something else toxic? Thanks again John.)

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Maple Tree

Maple Tree · Gardenality Genius · Zone 10A · 30° to 35° F
Rafael-I remember your original question about spotted leaves and curling of your citrus tree. If you are seeing small insects and signs of webbing or cottony looking substances along with leaf curling it could be caused by a few insects such as aphids, mealybugs, and spider mites. The malathion would work well for all these pests. Be sure to read instructions for mixing and treating carefully following instruction as stated on the particular product. If possibly I would wait to spray malathion if the tree is in bloom. This could kill the bees that pollinate the citrus. You can also find products that contain both an insecticide and miticide in one product. Both the malathion and the combination products should help with your pest problem. Was the insect you saw found inside a curled leaf? If you can get a picture of this insect it would help to identify it. If most of the leaf damage and curling is on the new younger leaves the pest is most likely aphids. Leaf curl as I think I mentioned before can be caused by insects, stress from hot temperatures, and too much water. If the leaves curl up and inward this is normally a cause of insect damage. Leave curling downward can be normal in late fall or winter. Let me know how you make out.

7 years ago ·
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Answer #1 · Maple Tree's Answer · Hi Rafael-Neem oil is all I use on my crape myrtle. It works faily well for both a fungicide and insecticide. I like using it as any overspray doesn't hurt other plants and it does not kill the benificial insect. Unfortunately much of the time I have to treat my plants and trees several times for good control. I have older varieties of crape myrtle that get powdery mildew along with aphids. The neem oil does a fairly nice job at keeping these under control. Most of the damage on the ash trees are done by boring insects or ones that may have a life cycle that hides them making them harder to control as they are concealed part of the time. Have you identified the insect of both of the trees? Besides the neem oil there are of course chemical insecticides that can be used but it is best if you can identify what insect is chewing on the leaves. Besides what the insect pest looks like the type of damage such as holes, tunneling within the leaves, or chewed leaf margins may help to identify the insect doing the damage. If you have a picture of any of the insects or leaf damage it would help to identify the insects. To the right of your name below your question you will see where you can upload any picture you have saved on your computer.


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