Black Tuna was created by 5 Star Organic in order to provide patients with a powerful hit of THC that is beneficial for chronic pain relief. It is a British Columbian stain made by crossing Lamb's Bread and Herojuana and is extremely popular in Canada not only for the strong narcotic effect it provides but also for its quirky marketing tactics as this was sold in sealed tuna cans. Flowers of this marijuana strain are compact, covered in trichomes and carry a strong smell.