A hybrid of 'Chehalem' x 'Olallie'. Named after Marion County, Oregon where it was bred. Currently the most common blackberry cultivar in production. Produces fast growing, trailing canes that can reach 20' in length. Yields medium to large conical berries that are sweet, juicy and slightly tart in flavor. Great for eating fresh, frozen or canned. Use in pies, jams and jellies. Height: 5-6'. USDA Z7