true. But with grass all around him, how could he fail to be in tune with it ? i think your theory is right, though, SK, other wise he oculd use it in subrosia.
I think it does have to do with nature. Out of all of the common types of plants trees are the ones that live through all the seasons, so it's logical that a tree would be the focus of the Rod's power. The stump aspect is probably so that Link is closer to the heart of the tree itself.
That would work, if the heart of a tree counted as the heart of nature.
I like the idea that a tree should be considered as the heart of nature, I love trees. I think it was awesome that you had to find a log to use the rod, it was an important aspect of the game and it would not have been as fun if you could use the rod everywhere.
I think it does have to do with nature. Out of all of the common types of plants trees are the ones that live through all the seasons, so it's logical that a tree would be the focus of the Rod's power. The stump aspect is probably so that Link is closer to the heart of the tree itself.
I agree with Cevian, it just makes perfect sense to me. Logs don't necessarily change from season to season since they are dead trees. They are also realistically abundant enough to be spread across the land.
Plus, it just fits Zelda. Ever since A Link to the Past, logs and forests have always been a stable in the Zelda games. The flute boy in A Link to the Past, the numerous logs in Ocarina of Time, and even the Minish Cap had something similar to transform from regular Link to Minish Link. Just Nintendo's obsession with logs I guess.