I know I don't, lol, and it certainly bores me too. But the characters in the books would most likely know such things, it being important to their lives as farmers/commoners/whatever. Unless it's someone like Min, who apparently doesn't know a thing about nature, and RJ always made a point of having her say so, and not mention a thing about the various fig, elm, ash, and other trees they pass.

So is it boring? Yes. Do some authors, like RJ, use it simply because it fits with their ponderous style? Yes. But I think such books still have justification for including those things, so I don't have a particular problem with it.