The Navaho Blackberry Plant is a top choice for those seeking a thornless variety that is self-supporting due to its erect growth habit. This plant is known for its ability to bear fruit in the first year, with large, dull red berries that ripen in the mid to late season. The Navaho blackberries are medium-sized, firm, and have a mild flavor that is less tart compared to other thornless berry varieties. (USDA Zones 6-10)