4 listings in Leavenworth, 2 of them farmers markets. 2 have a market day and hours from a public register or the market's own website, and 1 appears in the USDA SNAP retailer register. Market days in Leavenworth: Wednesday (1), Sunday (1).
Few Leavenworth listings have a schedule or SNAP authorization we could source. Ellensburg, 45 miles away, has 8 listings with more sourced detail; see also all of Washington.
Leavenworth Community Farmers Market is authorized SNAP retailer in the USDA register. Ask at the information table how EBT tokens work at that market.