Chicago Department of Environment's informational site for urban dwellers to properly care for trees.

Gives cultivars, growing tips, physical characteristics, and growth rate information.

A worldwide organization of gardeners, nurserymen and other people who are devoted to the appreciation and study of magnolias.

Contains information and pictures.

Designed to provide a place to learn about the anatomy and physiology of tree bark, fungal canker diseases that affect tree bark, the wound responses of injured tree bark, and the role of wound responses in the resistance of living tree bark to wound pathogens.

A collection of American tree pictures.

Gives information on where to use trees and how to plant them correctly.

Features information on tree care and contact information.

A resource for Southern gardeners who need information on trees that grow well in their area.

Resource for urban and community forestry: planting and caring for trees in cities and towns. Includes links list, research, news, forums, and educational materials.