What killed my Bismarck

Question

My Bismarck is about 10 years old, trunk is black and the top fell off yesterday. I have another one near it and it appears healthy.

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Answer 1

Oh boy... That was a fungal infection caused by the Palmetto Weevil. It was likely attacked by the insect and taken within a very short period.

This extension will be able to tell you more about these insects, and how to control them: https://entomology.ifas.ufl.edu/creatures/orn/palmetto_weevil.htm

This article will help you to care for Bismarck Palms: https://www.gardeningknowhow.com/ornamental/trees/bismarck-palm/growing-bismarck-palms.htm