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Old 09-08-2018, 03:39 PM
Location: South Carolina
1,615 posts, read 2,833,266 times
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Something is eating the leaves on my yoshino weeping cherry tree, and there are tiny black ants running up and down the trunk. I read on the internet that ants are a symptom, not a cause of destroyed leaves. The ants show up when something else is damaging the tree and providing yummy sap.

I took some pictures of anything strange that I saw. Can anyone tell me what's causing the eaten leaves and how to stop it? Right now, I'm leaning towards spraying the tree with water and dish soap from a pump sprayer to get rid of aphids. I can't think of what else would be causing it. The ants also seem to like hanging out on the little green balls that appear to be part of the leaf.

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Old 09-08-2018, 04:52 PM
Location: Former LI'er Now a Rehoboth Beach Bunny
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Try neem oil and dish soap and water. The green balls look like leaf gall and can be the leaves natural response to the insects that ate the leaves. Kind of like a blister to a foot. It could be a fungus or bacteria for the leaf damage.
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Old 09-08-2018, 06:24 PM
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Yeah, aphids or some other sucking insect is probably a problem. The ants are a symptom, in that they eat the 'honeydew" (aka aphid poo) left by the aphids.

nuts2uiam provides a good solution.

However, it might be 'shothole', or cherry leaf spot, which is a fungus. Raking up the leaves and disposing of them (garbage not compost) will help stop the fungus.
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