Q.Christmas Palm Needs Help
I have several christmas palms and they are looking too good. One has the center dead with some green branches. Hopefully it can be saved. Let me know if your fertilizer will help.

Certified GKH Gardening Expert
We don't sell any products or plants. We provide free gardening information. I am sending you a link to a couple of articles that may help. Your trees all have yellowing fronds so I am concerned about lethal yellowing disease. If you have not been fertilizing you might try that, but I would consult an arborist or your local extension agent to see about lethal yellowing. The article also says competition between trees too close together can cause failure to thrive.
https://www.gardeningknowhow.com/ornamental/trees/palms-trees/lethal-yellowing-disease.htm
https://www.gardeningknowhow.com/ornamental/trees/christmas-palm/growing-christmas-palm-trees.htm