I was a little bit down too when heard about his sprays a while ago. But it didn't surprise me considering the area and the amount of ginseng he has. For what it's worth, here is the mention of his organic certificate,
www.hardingsginsengfarm.com/orgncert.htm
.
Maybe he's able to achieve that by refraining from spraying the last 2 years before harvest? So if he let them grow for 10 years, he can spray the first 8? Most organic certificate requires no chemicals for 2 years since they just deal with annual vegetable or fruit crops. I'm purely hypothesizing here and could be really off.
