I have some young trees I am planning on planting, (fruit trees)they will be planted around a lake I have put in, some of the soil, the top 6"-12" where the trees will be is sub soil from the excavation of the lake. I have fertilized and limed the soil already and planted winter wheat and clover, which has come up pretty good, especially the wheat, will I need to add anything additonally to the soil when I plant the trees?