M.S. University of Illinois, Urbana, Illinois, Natural Resources and Environmental Science (2008)
B.S. Michigan Technological University, Houghton, Michigan, Forestry (2000)
- ISA Board Certified Arborist IL-4316A
- Tree Risk Assessment Qualified
- Illinois Arborist Association Board of Directors member 2010 to 2012
- Arboriculture Research and Education Academy Vice-president, President-elect, President 2010-2014
- International Society of Arboriculture
- Society of American Foresters
- Pacific Northwest Chapter of the ISA
Arboricultural Consulting Associate at Teragan & Associates, 2014-Present
- Preparing tree inventories, tree appraisals, tree risk assessments, mitigation options, and arborist reports
Root System Biology Research Specialist at The Arboretum Lisle Illinois, 2010-2014
- Designed and implemented research projects and preformed laboratory analyses for a variety of projects.
- Recruited, supervised, and trained assigned staff.
- Prepared reports, cooperated and authored manuscripts in scientific journals, grant proposals, and trade magazines.
- Manager of project budgets
- Maintained computer hardware and software
- Manager of the I-Tree eco team, completing the survey of the seven county Chicago regions.
Root System Biology Research Assistant at The Arboretum Lisle Illinois, 2000-2010
- Assisted in the management of the root system research program.
- Perform technical and complex research and laboratory tests and procedures.
- Manage and train staff and interns.
Research Intern at The Arboretum Lisle Illinois 1999-2000
- Used a variety of scientific instruments to collect and analyze samples for a variety of research projects
Educational Materials and Outreach
- Asian Longhorned Beetle: Protect our Urban Forest. CD 2002
- Assisted in the creation of Deep Roots of Landscape Trees website.
- Assisted in the organization of conferences:
- Tree Risk Assessment Symposium, 2012
- International Society of Arboriculture Arbor Fair, 2010
- The Landscape Below Ground Research Symposium and Workshop, 2008
- Getting the Roots Right, 2005
Horticulture Research Institute 2014, Extending the Harvest Season for Field-Grown Trees by Digging Bare Root.
Tree Fund John Z. Duling Grant 2013, Establishment and Stability of Larger Trees Transplanted Bare Root.
Watson, G.W., A.M. Hewitt, M. Custic, and M. Lo. 2014. The management of tree root systems in urban and suburban settings. I. A review of soil influence on root growth. Arboriculture & Urban Forestry 40: 193-217.
Watson, G.W., A.M. Hewitt, M. Custic, and M. Lo. 2014. The management of tree root systems in urban and suburban settings. II. A review of strategies to mitigate human impacts. Arboriculture & Urban Forestry 40: 249–271.
Watson, G.W., and A.M. Hewitt. 2014. Avoiding excessive soil over the roots of newly planted of trees. Arborist News 23: 22-25.
Hewitt, A.M., and G.W. Watson. 2013. Root management challenges on urban sites: Human intervention in root development. Arborist News 22: 12-17.
Watson, G.W., and A.M. Hewitt. 2012. The relationship between structural root depth and vigor of urban trees. Arboriculture & Urban Forestry 38: 13–17.
Hewitt, A.M., and G.W. Watson. 2012. Root management challenges in urban sites: Achieving a healthy root-crown balance. Arborist News 21: 16–19.
Hewitt, A.M., and G.W. Watson. 2009. Bare root liner production can alter tree root architecture. Journal of Environmental Horticulture 27: 99–104.
Hewitt, A.M., and G.W. Watson. 2009. Seedling root stock production can alter root architecture. In G.W. Watson, L. Costello, B.C. Scharenbroch, and E. Gilman [eds.], The Landscape Below Ground III: Proceedings of an International Workshop on Tree Root Development in Urban Soils, held at The Morton Arboretum, 131–138. International Society of Arboriculture, Champaign, Illinois.
Watson, G.W., and A.M. Hewitt. 2006. Getting the roots right. American Nurseryman 203: 35–39.
Watson, G.W., and A.M. Hewitt. 2005. Distinguishing between root system architecture changes and planting too deep. In G. W. Watson [ed.], Proceedings of Trees and Planting: Getting the Roots Right, 1–5. The Morton Arboretum. Lisle, Illinois. Available at: actrees.org/files/ Research/mortonarb_getting_roots_right.pdf.
Hewitt, A. and G. Watson. 2008. Alteration of tree root architecture by nursery production practices. Poster, International Society of Arboriculture, St. Louis, MO.
Watson, G.W. and A. Hewitt. 2005. The response of four species of roots to mechanical damage. Poster, International Society of Arboriculture, Nashville, Tennessee.
Hewitt, A. and G. W. Watson. 2004. A bioassay for detecting paclobutrazol in trees. Poster, International Society of Arboriculture, Pittsburg, Pennsylvania.