Answer: I guess I'm wondering why you are keeping your palm in the container rather than planting it in the ground? There's a huge stress on the roots when they are contained so tightly and not allowed to grow normally - and, hot sunshine can literally bake the roots, regardless of whether or not you water frequently. I think the solution is to plant your tree as soon as possible to alleviate the root stress. Or, you might want to have an arborist inspect the palm and make some on-site recommendations. I don't think spraying fungicide on the palm will fix the stress problem. Don't know what else to suggest!
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