Jack Herer is a sativa-dominant cannabis strain, combining a Haze hybrid with a Northern Lights #5 and Shiva Skunk cross. Named after the late, legendary cannabis activist and author of the 1985 book “The Emperor Wears No Clothes,” Jack Herer has achieved a lofty, heavily proliferated status among modern cannabis strains. Its flavour is reportedly a composite of citrus, pine, wood and spice.