Deep Roots of Landscape Trees

It is estimated that over half of all urban trees are planted to deep, dramatically shortening the life of the tree. A combination of nursery practices and improper planting (even by professionals) contribute to this epidemic.

This is a good resource which shows planting depth problems for homeowners, municipalities, landscapers, and nursery professionals.  It has great photos, handouts, and easy-to-understand language.

Create in partnership by Morton Arboretum, US Forest Service, ISA, ANLA, and ACTrees.

http://www.mortonarb.org/deeptreeroots/index.html