https://store.usps.com/store/browse/uspsProductDetailMultiSkuDropDown.jsp?categoryNavIds=shipping-supplies%3afree-shipping-supplies&categoryNav=false&navAction=push&navCount=0&productId=P_O_1098M&categoryId=free-shipping-supplies

I ship in the spring and fall
I take the tree out of pot  and shake off all the dirt then I dip the roots in a bucket of water and shake to get as much of the dirt off.
then I wrap the roots in paper towels dip in water then squeeze  it so it is not dripping them put the roots in a plastic bag and tape the top around tight so no water can leak out, then I wrap the top in newspaper put it in box then put newspaper all around it so it does not move in box .  I ship on Mondays or Tuesdays so it gets to the buyer before Sunday and does not set in a hot truck over the weekend. I have a scale and weigh then at the nursery and print shipping labels thru post office when doing it at home you save on postage.