These are links to wonderful organizations that not only promote the importance of trees, they also provide invaluable information on the care of trees.


The International Society of Arboriculture is a worldwide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology, and the professional practice of arboriculture.

Tree Are Good

To provide the general public with quality arboriculture, or tree care, related information. ISA’s mission is to educate and help the public acquire an understanding of the importance and value of proper tree care.

Living with Fire

For information on making your home fire safe

Arbor Day Foundation

Inspire people to plant, nurture, and celebrate trees.


Is a 68-year-old public and professional resource on trees and arboriculture representing approximately 2,100 tree service and affiliated company members.

Nevada Division of Forestry

Includes Nevada Champion Trees and nursery program.

University of Nevada Cooperative Extension

See Publications, Horticulture, Trees and Shrubs section.

Ed Gilman, University of Florida Horticulture

Ed Gilman has a 45% research: 50% extension teaching: 5% classroom teaching assignment. The new online arboriculture class is available to all world-wide.