Too much fertilizer can damage or even kill plants because of its soluble salt content. Too much salt limits the roots' ability to absorb water and nutrients.
About the Author
Thomas K. Arnold is publisher and editorial director of "Home Media Magazine" and a regular contributor to "Variety." He is a former editorial writer for U-T San Diego. He also has written for "San Diego Magazine," "USA Today" and the Copley News Service. Arnold attended San Diego State University.