Is a greenhouse used for production of fruits and vegetables tax exempt under Ohio laws? Fruits and vegetables produced will be sold at a farmers market.
Do you mean sales tax exempt for the purchase? Even if it is agriculture, it does not mean it is necessarily sales tax exempt.
For tax exemption for the purchase, you'll want to read this factsheet:
Or, are you speaking to land/building taxes?
If you are not in the Current Agricultural Use Evaluation (CAUV) program, you can apply through the county auditor. For property tax and information relating to CAUV, go to our site at: https://farmoffice.osu.edu/our-library/farmland-protection-law