Two king palms show trunk erosion at the base, resembling termite damage. One has lost half its trunk circumference. This indicates active wood-boring insects (palm weevils, borers) or possibly dry rot.
Apply a contact insecticide (permethrin-based, e.g., Ortho Home Defense) to the trunk for immediate knockdown. Follow with a systemic soil drench of imidacloprid (Merit) for 12–18 months of internal protection against borers and termites.
Given the extent of damage, consult a certified arborist for structural assessment and possible trunk injection. Remove severely compromised palms if they pose a safety hazard.
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