Critical Jack is a premium feminised, Sativa-dominant collector cannabis seed. Synonymous with high productivity, genetic stability and vigour, the level of quality has been widely demonstrated for many years. The genetic lineage of this exceptional cannabis plant speaks for itself, as she is the worthy heir to legendary strains such as Jack Herer and Critical+. In addition, she shows a great deal of resilience. Growers from all over the world have had great results in different climates.