Sir Jack
Sir Jack

Sir Jack

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Sir Jack is a plant that is one of the most used strains in hybrids in order to obtain incensed and powerful sativa strains.

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Sir Jack by Exotic Seeds is the feminized version of the legendary Jack Herer. Now you can get your hands on this amazing strain at the best possible price. These plants are famous for their unusually strong effect and incensed, characteristic flavor.

Sir Jack - High Quality Jack Herer Strain

How to Get the Best Results Indoors

Indoors, these plants have a more open structure with a perfect distance between nodes that allows light to reach the lower branches which therefore increase yields. It has an extremely pungent smell, making it necessary to use an active carbon odor filter unless you want your neighbors calling the cops on you. You can get anywhere from 550-600g per square meter under perfect conditions, taking a total of 9 weeks to finish flowering.

Growing Sir Jack outdoors

Outdoors, if you want it to grow large you’ll need to plant at the start of April, and it will grow into a beautiful, open-branched tree with intensely green sativa leaves. Half way through August, it will begin flowering and should be finished around the middle of October. It’s slightly sensitive to high humidity, so try and protect it from the rain to avoid any kind of rot.

Sir Jack - Potent Mental Effect

Its effect is quite hard to forget; it’s mental and physical in a way that few sativas are, accompanied by a deep bodily relaxation. It has quite a Haze flavor, very incensed, and it’ll stick around in the air for a while after smoking.

  • Sativa/Indica: 70/30%
  • Flowering: 9 weeks indoors, mid-October outdoors.
  • Height: 0.5-1.5m indoors, 1.5-2.5m outdoos.

Data sheet

Exotic Seed
Seed type
Available individually
Recommended use
Recommended growing environment
Cannabinoid profile
Physical effect
Psychoactive effect
Indoor Flowering Time
9-10 weeks
Outdoor Harvest Time
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Sir Jack Reviews


Te deja roto en el sofá !! Brutal su sabor y olor y un ice o lator que no volveré a sacar


Te deja roto en el sofá !! Brutal su sabor y olor y un ice o lator que no volveré a sacar

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Sir Jack

Sir Jack