I have a raised bed I'm building currently with bricks as the border and I'm gonna have it so the mulch and soil can be on a slope, I was just wondering if this is a must for your ginseng plants to thrive? I know the soil must have good drainage that's why most wild seng is found growing on a hill, if anyone has any suggestions for raised beds or how I should go about doing this please let me know. Thanks!
I agree with BCastle that if you are doing raised beds then you should have plenty of drainage.
I have seen wild seng thrive in flats (hollow bottoms) but not in every hollow bottom... usually when you do find it doing well in flats the soil is well drained, sandy or composed of a lot of rock chip or small rock. It does very well in locations like that with basically no slope at all.