Illinois Native Plant Society
For professionals and amateurs who share an interest in all aspects of the flora native to the state. http://www.ill-inps.org/
The Conservation Foundation
Non-profit land and watershed protection organization. Includes news, list of projects, and membership information.
State Microscopical Society of Illinois
Organization of amateur and professional microscopists. Information about monthly meetings, workshops, and other events, and how to join
Save the Prairie Society
Sponsors tours and activities as an educational service, land acquisition, volunteer land management to protect prairie.
ICIA - Illinois Crop Improvement Association
A diverse seed improvement agency offering seed certification, quality assurance services, grain quality testing, winter farm facilities and greenhouse services.
Quad City Botanical Center
Gardens located near the bank of the Mississippi River in Rock Island. Overview of admissions, facilities, and programs plus maps, directions, and calendar of events.
