BCastle,
Have you considered whether the re-planting failure problem is due to a reaction from a type or types of leaves you have in your' woddsgrown beds? In most cases, Ginseng will not come-up or survive if introduced into locations with a fair amount of Pine trees. However, if the Ginseng is there before the Pine trees, it will usually survive and in many cases, will have the heaviest roots compared to roots of the same size dug elsewhere...with the exception of Red Clay. Also, leaves from Apple trees from just about any kind of Apple trees, will kill almost anything you plant.
Just a thought!
Frank