you can actually purchase potted ginseng plants! A lot of 'specialty' (herbal) nurseries will sell them...especially "native' plants like American Ginseng. I bought a plant last year or the year before and have planted it on the north side of my yard (heavily shaded of course) and it's doing really well there. Of course you don't harvest it for a year or two...but i'm not planning on harvesting the ginseng.
I have lots of different 'valuable' herbal plants growing in my yard that no one even recognizes! (My secret little medicine cabinet if you will!) Heck...I got some "we checked your lawn and you have plantain, red clover, dandelions, etc....and we could treat your lawn with chemicals to get rid of these horrors" pamphlets! I laughed....the plantain treats burns and bee stings, the red clover can be used for wine, salves etc and the dandelions (if kept in check) can be eaten or their roots roasted like coffee! Don't sound like horrors to me!
It's a good sign everyone has found the ginseng in their areas. I think a lot of 'wildcrafting' can have negative impacts if not kept in check. (hence my growing of these plants in my tiny yard). IF you wanted to grow these plants, I would suggest doing it in the ground vice containers as the tubers are what you're after....in containers, they will require much more attention like watering etc. IF you can plant them in the ground, that would be ideal. Good luck!