Black Jack marijuana strain is a 70/30 Indica dominant marijuana hybrid. This bud is known for high potency and long lasting effects due to high THC content. With 24% THC levels, the herb is not advised for beginners. Users with low tolerance should be mindful of the dose. The buds are large, dense, and elongated. The nugs are covered by numerous sticky trichomes. Black Jack marijuana alleviates many medical symptoms and is good for evening and night time use due to sedative effect.