Critical Jack is a feminized strain of Marijuana resulting from a cross between Critical + and Jack Herer. This highly productive strain has become the most well-known strain of Cannabis in Spain over the past two years.

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Feminized Critical Jack Marijuana Seeds

Critical Jack is a feminized strain of Marijuana resulting from the cross between Critical + and Jack Herer. This perfectly balanced genetics is known for its high productivity and fungal resistance.

It produces a balanced and fairly strong effect, somewhat psychedelic, perfect for a relaxing night. It has a greater power and resistance when compared with its parents.

When developed, it becomes into a vigorous Sativa plant with a fast growth and in outdoors can reach heights of up to 3 meters. It also presents precious light green leaves, separated internodes and a high amount of buds filled with with resin containing a THC level that can reach 21% if you let it flourish few days more (about 70).

In general, 55-65 days are enough to yield between 1kg and 1450 grams per square meter of potent weed in a growing room. In outdoors, you will get the same yields but per plant that can be harvested from late September to mid-October. Nonethelesse,if the weather starts to become cloudy and very rainy you should harvest it in late September: the result is guaranteed to surprise.

Main features of Critical Jack Marijuana:

  • Feminized
  • Indoor and outdoor
  • Genotype: hybrid
  • Genetics: Critical + x Jack Herer
  • THC: 14-18%
  • CBD: average
  • Bloom: 55-65 days (indoor) or late September to mid October (outdoor - northern hemisphere). If you let it flourish up to 70 days you can get a THC of 21%
  • Highly resistant to mold and moisture


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