Make sure you can water them at least weekly for the next 2-3 years. I have planted trees as balled and burlapped along with container-grown and IMHO, container-grown is the way to go. Stay away from fast growing trees(Willow, Cottonwood, Cedars, etc) unless you want to use them as a buffer. Then cut them down in a few years after your more desirable trees have grown....du