Bernie Vanderkleed (now deceased) at Lafayette, IN grafted a tomato onto a horseweed. I saw it with my own two eyes. As I recall it had tomatoes on it. It was a high graft and the understock still had leaves on it so I knew it was a horseweed understock.
Jerry
[NAFEX] Tomatoe on horseweed.,
Jwlehman, 03/13/2004