These are wide ranging and include some less obvious options, therefore the following list is by no means definitive.

➤Colleges and Universities - Research, Teaching and Extension
➤Biotechnology Companies
➤Plant Protection Companies - Biological and Chemical
➤State and Federal Agencies - Agriculture, Forest, Natural Resources,      Environmental Protection
➤International Agricultural Research Centers
➤Nurseries and Garden Centers
➤Public Policy and Non-Governmental Organisations
➤Golf courses and Public Parks
➤Environmental, Agricultural and Patent Law firms
➤Lawn and Landscape Maintenance companies
➤Diagnostic Laboratories
➤Seed, Plant Production and Tissue Culture companies
➤Private Consulting firms - Agriculture and Urban
➤Botanical gardens and arboreta