But in the shift from skis to seed catalogs, don t forget that other folkloric celebration, Arbor Day. If we cast a shadow, it is time to plant a tree. If we don t cast a shadow, it is still time to plant a tree. Arbor Day, which is observed on the last Friday in April, was started by J. Sterling Morton in 1872 to promote the planting and care of trees. This year Arbor Day falls on April 27.
Trees take it better if they re transplanted when dormant, before the buds break.
A good planting hole is essential to the survival of the tree. Well, maybe that was someone else, no matter. The planting hole should be two to three times the width of the root ball, but no deeper . A common fatal error is planting too deep. Unless the soil is very sandy, do not add peat moss or organic matter.