I don't believe this is the proper forum for your question.

Check with your state's Extension Service. Each county should have it's own Cooperative Extension Office which provides free information for the asking.

Look here: http://www.mc-mncppc.org/parks/division/contacts.shtm
Email them or call them up. :-)
Good luck!

Back in the days when I was a community gardener (quite a few days, probably about 6 or 7 years), I enjoyed communicating with and learning from this group:

Here is a link that might be useful: American Community Gardening Association