Recently an editor from one of the gardening publications asked me what I thought the number one mistake people make in their landscapes. Based upon experience, I replied 'proper planting.' Improper planting is a major cause of stress among trees, even several years down the line when that stress invites insect and disease activity. As easy as it sounds, thoughtful planning should go into the placement of a tree as well as how the hole is prepared and removing burla, twine, and wire baskets that typically accompany a transplanted tree. It's common to see the infamous 'one year guarantee' on trees and shrubs. Even if improperly planted and the tree typically can survive with the existing soil surrounding the root ball for one year. It's when the tree attempts to root out and establish itself in the existing soil when the stress can occur. I have visited properties two years after the fact, only to find the twine and burlap still intact, with a puzzled homeowner asking me why the tree is stressed when it was "professionally installed." All in all, take the time to follow ISA planting guidelines and help your newly planted tree establish itself and thrive as easily as possible.