If you are planning a community garden, this toolkit from the University of Missouri will be a big help.
https://web.extension.illinois.edu/fmpt/downloads/45968.pdf
https://web.extension.illinois.edu/fmpt/downloads/45968.pdf
101 Mumford Hall (MC-710)
1301 W. Gregory Dr.
Urbana, IL 61801
Email: extension@illinois.edu