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Critical Jack

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Critical Jack by Dinafem combines two of the most famous strains out there; Critical+ with its high yield and flowering speed indoors, and Jack Herer with its elevating and psychoactive effect.

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Critical Jack by Dinafem is the perfect strain for growers that are looking for energetic plants without sacrificing yield or waiting for a long flowering period. This strain is highly resistant to fungi and rot, trait inherited from its Herer genes which also gives it its energetic effect. Critical+ gives it a fast flowering period and dense buds.

Indoors it does well, as it doesn’t really take up much space at all, so you can plant a lot per square meter. You shouldn’t let it grow for too long, having 16 of them per square meter and, honestly, you should flip them straight to 12/12h. It grows out long, thick branches that can grow amazing buds if you train the branches. If you use a SCRoG system you can easily get more grams per watt. After 60 flowering days you can get up to 625g per square meter.

Outdoors this strain grows quite large, making for large yields and a pretty easy grow. The branches will receive quite a lot of light, more than indoors, growing buds absolutely stacked with resin. You can easily tutor these babies outdoors to open up the branches so that they can put up with much more weight than expected. Towards the end of September/beginning of October, your harvest will be ready – you can get up to 1kg per plant.

It has a beautiful incensed flavor with citric, earthy flavors that old school smokers love. It has quite an energetic and elevating effect, slightly mental and physical too. Your mind will begin opening up to new ideas and you’ll enjoy conversations more than ever.

If you’re looking for a plant that gives you awesome results that’s also resistant to fungi and pests, then Critical jack is the strain for you.

  • Sativa/Indica: 60/40%
  • Flowering: 8-9 weeks indoors, end of September to beginning of October outdoors.
  • Height: 1.2-1.4m indoors, 1.5-2m outdoors.

Data sheet

Seed type
Available individually
Recommended use
Recommended growing environment
Cannabinoid profile
Physical effect
Psychoactive effect
Indoor Flowering Time
9-10 weeks
Outdoor Harvest Time
Flavor 2
Dry/Low humidity

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Critical Jack Reviews

Juan m

Planta super rapida para ser sativa dominante,ya que a acabado al mismo tiempo que las sugar black rose early version que estaban al lado,cogollos monstruosos cargados de resina asta los topes,facil de cultivarlas simplemente van solas con sus abonados normales recomendablisima para principiantes mas incluso q la critical + normal ya que la critical + esta recomendada para principiantes pero ami me parece mas dificil de lo que dicen ya que la brotytis esta casi asegurada si tienes un minimo fallo en la humedad o en los riegos,cosa que a la critical jack no le pasa es muchisimo mas resistente y recomiendo tutorarlas todas ya que yo solo tutore las mas grandes y las pequeñas se doblaron totalmente con el peso monstruoso de las flores....100x100 recomendable.

Ricardo Arias

No ha presentado ningun problema hasta ahora, resiste muy bien las altas temperaturas y los abonos, estructura muy homogenea, la poda apical tiene que realizarse a tiempo y en las fases tempranas, pues luego le quita bastante altura, muy buen olor y hasta ahora ninguna fitoenfermdad, recomendable 100% para los primerizos como yo, me gusta mucho y estoy esperando con ansias su etapa de floracion, saludos desde el norte de chile.


los cogollos estan como piedras,estoy muy contento de haberla comprado

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