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Dinafem Seeds - Critical Jack



Critical Jack is a feminised cannabis seed deriving from the cross of two cannabis legends: Critical + and Jack Herer. At Dinafem Seeds, we decided to work on these two genetics because we thought that crossing them would lead to a really good thing, and that's what happened. We've masterfully mixed the traits of both genetics until the three legendary families (Skunk #1, Northern Lights and Haze) within this strain became evident.

In a nutshell, a high-class hybrid that deserves a very special place in any garden; an amazing reputation earned for her yield, potency, taste as well as for the incredible extractions that can be made out of her super-tasty trichomes.

  • 1st prize in the 'Outdoor Sativa' category at the 2016 UCLA cup (Uni‚àö‚â•n Cann‚àö¬∞bica Latinoamericana).
  • 1st prize in the "Best Shatter" category of the 2015 San Bernardino Hempcon Cup, USA.

Critical Jack turns into marijuana plants that could reach heights of 3 meters outdoors. Their open and branchy structure improves light and air penetration, resulting in better yields of large, thick, rock-hard buds covered in a dense layer of trichomes.

Critical Jack delights us with a sweet and intense taste that mixes hints of wood, incense, pine, spices and lemon. A marvelous combination nobody will be able to do without!

Critical Jack reveals a clear Sativa influence on the part of Jack Herer: her effect, potent and long-lasting, fills you with energy and joy. On top of that, it's got a psychedelic point that will awaken all your senses. As one would expect from a 60 % Sativa-dominant hybrid, she’s more cerebral than physical, perfect for opening your mind and helping you think clearly when, for instance, you need to initiate interesting discussions or simply carry out your daily chores. Whatever it is what you need to do, this strain will make you feel just right.

Genetics Critical + x Jack Herer
VarietyIndica / Sativa
Flowering Time55 - 65 days
Flowering TypePhotoperiod
THC Content21.00%
GrowsIndoors & Outdoors
Plant HeightUp to 3 meters outdoors
EffectCerebral, Long-lasting

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