Always plant bare root: the root system is fibrous and spreads naturally, optimizing form, health and wind firmness. Carefully root prune to ensure that roots spread out in the wedged-open hole, which you can make with a tree planting shovel(designed for reforestation) that you turn around backwards and drive straight down-then back cut to close the wedge. You can also place jiffy peat pellets in the woods to collect native seed, and grow for 1 Summer and plant.
Plant the root collar slightly above ground so that you can feel the top lateral roots spreading out. Do not bury the stem. Microsite selection: select the shaded side of a log on really exposed sights, plant a collective of trees together so that they can share nutrients, increase wind-firmness, and diminish buck rub. Roll the log away after the summer to eliminate mice habitat. DO NOT MULCH-mulch prevents the soil from warming enough for early root growth and it prevents all but the biggest rains from moistening the soil. It rots the stems, absorbs nutrients, and it is NEVER done in British Columbia where they plant millions of bare root and plugs. Instead, dip roots in a mycorhizzae dip to keep them moist, and carry seedlings in a bag-never a bucket of water. Scrape a micro-V trench uphill of seedlings to direct more rain to roots. Plant mounds which warm up earlier, helping root growth, especially if you are planting a species that likes drained soil. Never plant potted or BandB-defective root form. AND, NEVER EVER PLANT A TREE ON ITS OWN. There is a book on the hidden life of trees.