One inclined to patronize a farmer's market

• Farm-to-table advocate
• Typical farmers' market patron
• Patron of a farm-to-table restaurant, maybe
• Farm-to-table consumer
• Farmers' market frequenter, maybe

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
one who eats only locally grown or raised food, by 2001, from local + ending abstracted from carnivore , etc., ultimately from Latin vorare "to devour" (see voracity ).

Wiktionary Word definitions in Wiktionary
n. One who tries to eat only locally grown foods.