www.trailblazerfoods.com. There's just one thing that makes better jam, better fruit. At Walls Berry Farm, we use the best fruit! Plump, juicy Marionberries (a NW blackberry) are naturally sweetened to perfection and then gently cooked to preserve that just-picked flavor. We hope you enjoy the best fruit flavor from the Northwest. Oregon. A quality product of Trailblazer Foods.