April is Arbor Month and a new five-minute video produced by the Iowa DNR aims to help residents learn to properly plant trees and avoid very common mistakes—vital to the longevity of new plantings. Common errors such as planting roots too deep or too shallow, or not removing encircling roots can lead to improper rooting and other issues years later. Improperly mulching—especially with mulch mounded up around the tree trunk—can lead to rot and also dramatically shorten the life of the tree.