The second thornless primocane-fruiting blackberry released by the University of Arkansas, Prime-Ark® Traveler, produces medium-large berries, with good yields and has excellent, vigorous plant. Berries are with good flavor and sweetness and lower acidity than other blackberries. Primocane-fruiting blackberries do better in areas with lower summer temperatures. U.S. Plant Patent #3409542. Blackberry, Prime-Ark Traveler, 1 Plant, White, Burpee