Back Jack - Mr. Greengenes

An elite backcross bred by Mr. Greengenes utilizing the original cuttings of Jack Herer combined with fruitful notes of Mr. Greengenes Feijoa Kush. Turning out a modernized, slightly “kushified” version of the legendary Jack Herer elite clone. Keeping the pure Jack Herer experience intact while adding frost, bag appeal, fruitier terpenes, and a touch more body to the high. Growing Back Jack you will find plants that are instantly recognizable as Jack Herer (structure, smell, effect), but about 20–30 % of keepers will surprise you with loud tropical-feijoa, berry-kush, or fruit-punch notes on top of the classic pine/haze base.
 
If you love Jack Herer ~ You want BACK JACK in your garden. Thoughtfully crafted in Mr. Greengenes garden to lock in the desirable legendary rare Jack Herer clone’s electric sativa soul while folding in modern Feijoa Kush terpenes and resin production. 
 
Grower Notes
Stretch:
2.5–3x in flower; aggressive topping or SCROG recommended.
Nutrient Sensitivity:
Moderate—Jack lean, but Feijoa Kush tolerates heavier PK boosts in weeks 4–6 for trichome production.
Pest Resistance:
High (Jack’s terpene armor + Kush resin).
Phenotypic Variation: 3 main expressions:
Classic Haze Lean (tall, pine-heavy, 9 wk)
Tropical Kush Lean (shorter, purple, 10 wk, higher yield)
Balanced Keeper (best of both—select mothers here).