Daniel says ,giving ginseng an artificial winter in Alaska ,No need they winter just fine although I have made some poor choices in terms of shade .It sis even more critical here because the season is short .I have good luck on a south south west facing hilside maximizing heat ,Remember it REALLY is a whole different game up here and ordinary rules dont exactly apply .The only thing to do is plant,watch and adjust .I will continue and report now and then .