I would consider keeping as many of these plants in your guilds as possible (since the soil microbiology obviously favors them) when planting your perennial fruits, at least any of them that you do not consider to be potential problems. Many people would be very happy to have volunteer ginseng! Or wild violets! Or Sweetgrass! Just something to consider. As far as the clovers that S Benji suggested, I would do that too. If the area was logged, it is disturbed, and will appreciate the nitrogen fixing. You should definitely consider some nitrogen fixing shrubs/and or trees. Overplant the nitrogen fixation as S Benji states.
plus wild ginseng, wild violets, wild geranium, sarsparilla, tick trefoil and sweet grass.