User blog comment:The New Dan/Build a Omnitrix!/@comment-3279837-20111120035712/@comment-4539351-20111122052650

I dunno, perhaps I assumed you were referring to that because that's the only time Wildvine ever has any form of communication with a plant-like creature ever.

Also, Max could hear Wildvine perfectly well. It was the Mycelium he couldn't hear. This supports my statement that it was the mycelium talking to Wildvine.