Is the growth of trees on graves related to the righteousness of their inhabitants?

Q: I notice that some people, when they see trees growing on a grave, describe the owner of the grave as having such and such virtues. Is there any relationship between the growth of trees on graves and this?

A: There is no basis for this, and the growth of trees and grass on graves is not evidence of the righteousness of their owners. Rather, that is a false assumption. Trees grow on the graves of the righteous and the wicked alike, and it is not exclusive to the righteous. One should not be deceived by the claims of the deviants and those with false beliefs who assert otherwise. And Allah is the One to be sought for help.