I don't believe Zachary was a plant. The cattle-call auditions draws the freaks like flies--most of them just want to be on TV. But poor, delusional, incredibly confused Zachary really thought he had a chance at being the next Idol, IMO. Just look at him. If his "mom" never told him that he couldn't wear women's clothes, then she probably never told him that he couldn't sing either.
Aren't fruits are plants?
I'm still on the fence if that's not realllly Dad. :-D