Can I Bury Part of the Trunk of a Coconut Palm Without Damaging it

Question

I wish to extend a retaining wall that would extend past a number of coconut palms, which I would not like to remove. Can I just cover the bottom 900mm of the trunk without affecting the palms?

Answer 1

This link is to a forum on Do It Yoourself and raising soil level on trees: https://www.doityourself.com/forum/lawns-landscaping/289547-dirt-fill-around-large-tree-how.html

Here is more information:
https://www.ipm.iastate.edu/ipm/hortnews/1995/7-14-1995/prot.html

I have been taught that 4-6 inches is tolerable for the tree, but no more than 6".