I love the first line. Using a five syllable word is really great in a haiku.

I may sound stupid, but I have no idea way a Quercus is. Maybe an A/N explaining it?

I have to say though, the line breaks seemed force for the syllable count and the repetition of hear seemed a bit much. Still it was a good piece.

PS If you're bored check out the Review Game and/or its Review Marathon (link in my profile).