Is this a Bismark Palm

Question

Should the lower branches be trimmed? They touch the ground.

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Answer 1

That does appear to be one, and it won't be necessary to trim the leaves unless they are fully dead. This article will help you to care for these palms: https://www.gardeningknowhow.com/ornamental/trees/bismarck-palm/growing-bismarck-palms.htm