THC: 28.61 | Sativa Jack Herer, also known as "The Jack," "Premium Jack," and "Platinum Jack" is a sativa-dominant marijuana strain that has gained as much renown as its namesake, the marijuana activist and author of The Emperor Wears No Clothes. Combining a Haze hybrid with a Northern Lights #5 and Shiva Skunk cross, Sensi Seeds created Jack Herer hoping to capture both cerebral elevation and heavy resin production.