Canadian Seed Lab is a group of professional growers and breeders who have been working in the industry since the late 90s. In the beginning, we worked mainly for the needs of clinics and pharmacies with medical marijuana as they needed our expertise. Therefore, we have extensive experience with the end users of the product. We know what consumers want and need! We also have a large circle of friends around the world, many of them professionals, with whom we exchange gene material. This allows us to create amazing strains with legendary genetics!

A well-known problem for auto flowering varieties is that their “photoperiodic parents” are more powerful. They contain more THC. Our unique CSL Ruderalis is a cross between the 2 best Ruderalises from North America; Mexican Ruderalis X Canadian Ruderalis. Thanks to the presence of the Mexican Ruderalis, specially selected with a high content of THC, it has become more powerful and stable. It allowed us to create an auto-flowering variety with a very high THC content that rivals photoperiodic plants.

A multiple winner of the Cannabis Cup, undoubtedly one of the most popular strains of marijuana in the world named in honor of the late Jack Herer, the world-famous activist for the legalization of cannabis. We checked the genetic work on creating a strain of initial varieties, obtained after crossing with a specially selected clone of Jack Herer. Many years of breeding work is the secret weapon of every grower.Juicy, shiny and sticky buds with a fresh scent and an odor of deep fruity notes. Double Jack has an excellent taste. The effect occurs immediately, a strong high taking you beyond the boundaries of consciousness.

Indica/Sativa: 40/60
Genetics: (Haze x (NL #5 x Shiva Skunk)) X Jack Herer X CSL Ruderalis
Weight: 500 gr/m²
Flower-time: 5-6 weeks
THC: 19%
CBD: 0.77%