(Summer bearing Mid-Season) This heirloom quality variety was released from the Cornell Small Fruit Breeding Program in Geneva, New York. This black raspberry plant is a high-producing early variety whose upright growth and cluster formation make its berries very easy to pick. It has medium, firm, glossy fruit with the best black raspberry flavor. Moderately hardy but very vigorous, Bristol shows tolerance to powdery mildew. Zones 5-8.