Few Warren listings have a schedule or SNAP authorization we could source. Brunswick, 37 miles away, has 7 listings with more sourced detail; see also all of Maine.
Warren at a glance
Types
Farmers market 2 · Farm stand / on-farm market 1 · Farmers market or farm stand (SNAP list) 1
White Oak Farms, Hatchet Cove Farm DF are authorized SNAP retailers in the USDA register. Ask at the information table how EBT tokens work at that market.