Property line/tree neighbor question

[PeterB]

August West wrote:
You've answered your own question.

I don't know all the full laws here in NOLA about trees on property lines, but I'd guess that we share responsibility for that tree...

Discover what the law says. If you want to delineate property lines, have a survey done.

How have I answered my own question? The problem is that, without knowing for sure where the property line is, I can't make any definite assessment of responsibility.

I was hoping to figure out the property lines without having to do a survey, but if I must, then I must...