Hours Of Operations Mustard Seed Wisconsin Ontario Mustard Seed Hours of Operation and Locations in Ontario, WI 4.7 - 105 votes 1 Locations in Ontario www.mustardseedshop.com Mustard Seed Hours Category: Accessories Apparel Shoes Jewelry Mustard Seed - Ontario, WI 54651 317 Main St(608) 337-4577 View Store Details Recommend For You Cable TV Alternatives Pronto Market Handy Stop Jewelers Bench Brown Shoe Company Easy Pickins Sports Fan-Attic Dollar Daze Flowerland Gold & Silver Exchange