Um, a very ordinary tree? Pretty, but not at all interesting or rare, just a typical tree for a middle-class suburban house. It sounds like a lemon tree may be just the thing.

"Thanks, love" or "Thanks, darling", but probably just "Thanks, [name]".

*nods* I'd use the name, but I specifically want an endearment here because one of the things the story is about is conventions, expectations, and roles. The lack of individuality is the point, if that makes sense.

Thanks very much!