In my experience ginseng prefers well drained soil. In the moist areas, the plants there could die off sooner, or not grow at all. I would tell you to look for companion plants. Look for blood root, golden seal, snake root, baneberry, ginger, maiden hair fern, blue cohosh. There are others as well, but typically if I find 3 or more of these plants in an area, ginseng could grow there as the soil and shade are right for ginseng to grow as well. Good luck.