ok so i ordered some trees from the county but i'm not sure where i want to put them yet. can i start them in a nursery setting? and still be able to move them by hand in 2-5 years? i thought about buying some black mat then roll it out and leave about 3 feet in between so i could get a tiller through there to keep the soil loose. then plant the trees in the black mat. not sure what the spacing of them should be????? trees are about 18" tall they tell me 50 black hills spruce 25 lindens 25 maple 25 dogwood bushes 25 river birch or do i burlap the root ball somehow?