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Critical Jack Feminized Bulk
€3.00
5/5
(12 Ratings)
Critical Jack is a strain that gives an energetic effect with incensed flavors, and thick compact flavors. It’s the perfect hybrid for incensed yields.
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Data sheet
Seed type
Feminized
Available individually
Yes
Recommended use
Recreational
Recommended growing environment
Any
Cannabinoid profile
THC-dominant
Genotype
Sativa-dominant
Physical effect
Soft
Psychoactive effect
Stimulating
Indoor Flowering Time
63-70 days
Outdoor Harvest Time
Mid October
Flavor
Fruity
Flavor 2
Incense
Climate
Warm
Description
Critical Jack by GB Seeds
Critical Jack is a sativa-dominant (70%) poly-hybrid obtained from the cross of a Jack Herer and a Critical Mass, resulting in a plant of great vigor and premium quality production, both outdoors and indoors under artificial light.
This strain features:
- Great genetic stability
- Protection against pests and mold.
- Its buds are large, compact, elongated, and rock-hard, possessing a rich layer of trichomes.
Without a doubt, it is an ideal strain for those interested in massive crops.
Taste and aroma of feminized Critical Jack
This feminized seed stands out for an explosion of intense and perfectly balanced flavors. At first hit, a very characteristic sweet and fruity base of Critical+ is perceived, with its fresh citrus touch reminiscent of freshly grated lemon. But soon the elegant and penetrating imprint of the Haze lineage appears, with deep notes of incense, cedarwood, warm spices, and a slight hint of pine.
Effects of Critical Jack
Critical Jack is a strain with clear sativa dominance, so it's noticeable from the first puff. Its effect is powerful, stimulating, and prolonged, perfect for those seeking more mental than physical sensations. You'll notice your mind activating almost instantly: a wave of positive energy, mental clarity, and motivation emerges, accompanied by an inevitable smile that marks the beginning of the high.
Its duration is also a strong point: the effect is maintained for hours without losing intensity, making it a perfect ally for lovers of potent sativas.
How to grow Critical Jack indoors: tips and production
It is an ideal variety for SOG cultivation indoors, producing large central buds in a fairly short time. We recommend up to 16 plants in square pots of all sizes of 7 liters to achieve optimal results. We will have it ready in 9 to 10 weeks of flowering from when it shows its sex after the photoperiod change. Production is also among the highest, up to 600g/m2 dry.
How to grow Critical Jack outdoors: pruning, production, and harvest
Outdoors, it is a large plant that tolerates all types of pruning and bending. This way we can increase production and standardize the size of the buds. It will be ready for harvest around mid-October, a little later than its sister Critical+ but reaching a much higher production, up to 1kg dry and plants up to 3 meters tall if we plant it early in spring as soon as the season begins. If we do not want enormous plants, we recommend waiting until mid-June and we will obtain smaller sized plants.
Looking for a sativa strain that has it all? With Critical Jack, you'll enjoy an abundant harvest, intense flavors, and a long-lasting effect. Buy now at GB The Green Brand and grow a legendary sativa.
At GB The Green Brand, we share this content with the aim of informing and providing knowledge about Critical Jack seeds. We do not seek to encourage their consumption. Each reader is responsible for how they interpret and apply this information, so we are not responsible for possible misuse.
Frequently Asked Questions (FAQ) about Critical Jack
What genetics does Critical Jack have?
Critical Jack is a sativa-dominant (70%) hybrid resulting from the cross between Jack Herer and Critical Mass. This combination yields highly productive, resistant plants with a stimulating mental effect.
What does Critical Jack taste like?
Its terpene profile blends the best of both genetics: sweet and citrusy lemon-like notes from Critical+, with a spicy, incense background from the Haze lineage. Hints of wood, pine, and cedar are also appreciated.
What effect does Critical Jack produce?
It has a clear and long-lasting high. It's a sativa strain that awakens the mind, boosts creativity and motivation, with a slight psychedelic touch ideal for those who enjoy cerebral effects more than physical ones.
Is Critical Jack easy to grow?
Yes, it's very forgiving and resistant. It has good vegetative vigor, tolerates pruning and bending well, and resists mold and pests better than other strains. Ideal for both indoor and outdoor cultivation.
What are the differences between Critical Jack and Critical+?
Critical Jack maintains the high production and citrus flavor of Critical+, but adds the potency and aromatic complexity of the Jack Herer lineage. The effect is more cerebral and long-lasting, with psychedelic nuances.
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Critical Jack Feminized Bulk
€3.00€
06/05/2025
As always good seeds fast strong and a spectacular end product I recommend them
Translated from Spanish
Como siempre buenas semillas rápida fuerte y un producto final espectacular las recomiendo
21/06/2021
Everything ok
Translated from Spanish
Todo ok
14/04/2021
The speed of this shop is brutal, the best ????????
Translated from Spanish
La rapidez de esta tienda es brutal la mejor ????????
11/04/2021
Arrived well
Translated from Spanish
Llego bien
08/04/2021
fast germination in 36 hours I already had it in jiffy
Translated from Spanish
germinado rapido en 36 horas ya lo tenia en jiffy
03/04/2021
Super fast shipping and very good quality!!!
Translated from Spanish
Envió rapidísimo y de muy buena calidad!!!
15/09/2020
Everything perfect. My buds are very thick and resinous, and the smell is promising.
Translated from Spanish
Todo perfecto. Tengo las flores muy gruesas y resinosas y el aroma promete.
31/08/2020
Germination in under 48h and honestly they are gorgeous, they responded really well to my feeding methods and are already showing pre-flowers about to enter the final stage, with fantastic growth. Quick and brutal response to topping. Thanks for such good service and good Critical Jack 100% feminized.
Translated from Spanish
Germinación en menoa de 48h. y la verdad es que están preciosas, han respondido muy bien con mis métodos de abono y ya están con las preflores a punto de entrar en la fase final, y con un crecimiento fantástico. Respuesta a la poda apical rápida y brutal. Gracias por tan buen servicio y buenos Critical Jack 100% feminizadas.
21/08/2020
Super fast germination. I hope for a good result from this famous strain
Translated from Spanish
Germinacion super rápida. Espero un buen resultado de esta famosa cepa
30/03/2020
I just received my package super fast, even with everything going on right now. After hearing so many good things about you, I'm going to set up a SOG with this strain along with some karamel and sugardelius and I'll leave a comment later. I recommend you 100% growbarato
Translated from Spanish
Acabo de recibir un paquete rapidisimo y con la que esta cayendo. Tras tanto buen oir de vosotros, voy a preparar un SOG con esta variedad junto unas karamel y sugardelius y ya dejare comentario. Os recomiendo 100% growbarato
22/03/2020
Everything very good they all germinated to perfection customer service support and shipping I recommend it everything very good
Translated from Spanish
Todo mui bien germinaron todas a la perfeccion la atencion el servicio y el envio lo recomiendo todo mui bien
21/03/2020
As soon as the seeds sprout I'll be able to give a proper opinion
Translated from Spanish
En cuanto broten las semillas podré opinar con criterio