Compare Jack Auto with more autoflower cannabis seeds, browse citrus cannabis strains, or read the PrimeStrains genetics journal.
Jack Auto is an autoflowering strain from Freedom of Seeds, bred by crossing Jack Herer with ruderalis. Plants stay compact, typically reaching 70 to 90 centimetres indoors, and move from germination to harvest in roughly eight to nine weeks, which suits growers who want a quick turnaround. It can be grown indoors or outdoors. The flavour profile is citrus, earth and sweetness, and the strain carries a modest THC level of around 11 percent alongside about 2 percent CBD. Indoor yields are listed at around 85 grams per two-metre area, while outdoor plants are said to produce roughly 150 grams each. Outdoors the seeds are suited to a May to October season across the UK and Europe. This Indica-dominant variety is a practical choice for anyone seeking a dependable, fast-finishing autoflower with a bright, citrusy character and a gentle, balanced profile.