I don't know what the rules are for Indiana, but I bet they are pretty much the same around the country. Your state may regulated markets out the Indiana Department of Agriculture or the Department of Health and Safety. You'll have to research to find which it is. Here in Minnesota it is Health not the Agri Department. Here's a link to ATTRA's publication on how to start a farmer's market. Maybe it can help.

Loodean

One question that always comes up with markets is sales tax.

In Indiana, sales tax doesn't apply to raw fruits and vegetables, or, as far as I can tell, to honey or jam or pies, so there's no problem there whether the growers/producers make the sales and donate the money or on the other hand donate the goods and the church makes the sales.

Indiana does tax flowers and bedding plants as best I can tell, so if someone wanted to be a stickler they could insist that producers/growers charge sales tax, etc. But tax wouldn't be an issue if the growers donated those items to the church and the chaurch made the sales -- as long as sales weren't held on more than 29 days in a year.

(In the link below, see "IC 6-2.5-5-26
Exemption; nonprofit entities; sales for less than 30 days each year; sale for educational, cultural, or religious purpose; sale for professional or workforce education improvement purposes")