Blackberry Navaho is an erect, thornless blackberry cultivar from the University of Arkansas. Well adopted to tropical and subtropical climates. Excellent, consistently rated the highest of the Arkansas varieties. Yields moderate to high, usually higher than Arapaho. The berries are small to moderate in size, and they are moderately sweet in flavor. Late ripening and a prolonged ripening period. Ripens beginning approximately June 15; fruiting extends for about five to six weeks. Fruit very firm; storage and handling potential exceptional; can be shipped under proper conditions.