Interested in identifying experienced speaker(s) on subject of growing heirloom vegetables (and flowers?).
Can You Recommend a Speaker in the NE?
Certified GKH Gardening Expert
I would suggest you contact your County Extension Office.
The may have information on speakers in your area.
Here is a link to help you locate your nearest office.
Also contact the local garden centers and greenhouses. They often have experts that would be happy to speak to groups.