one trunk of six on fan palm has become loose, fans yellowing slightly. Should I remove it, or try to prop it up?

Question

maybe from over watering? if so, will rest of plant die? all other trunks grow more upright, the loose one always grew at 45 degree angle, and is slowly getting lower to ground

Answer 1

It sounds like your palm is outside, so I'm guessing it is a hardy fan palm which narrows the choices. You may want to remove the stem that has loosened. Check the growing conditions mentioned in this article to be sure it's getting what it needs:

https://www.gardeningknowhow.com/houseplants/fan-palm/growing-mediterranean-fan-palms.htm