Autoflowering Seeds

Critical Jack Autoflowering


The most sought after taste, now in autoflowering format

Critical Jack Autoflowering is the powerful autoflowering version of one of the tastiest strains in our catalogue: Critical Jack. This amazing cannabis seed keeps the special scent of the original strain intact and adds all the amazing advantages of autoflowering genetics, making it faster and easier to fill our pantries with top-quality smelly buds. Born from the cross between our Critical +… Read more >
  • Indica: 60%

    Sativa: 40%

  • THC: 10-15%

    CBD: 0.01-0.2%

  • Outdoors:

    • 100-230 g/plant

    • 0.5-1 m

    • Early April / Late October

  • Indoors:

    • 25-100 g/plant

    • 70-80 days

  • Critical + 2.0
  • x
  • Haze 2.0 Auto

Perfect for: Palates seeking rich and intense flavours. Growers of all levels who want to grow as many times as possible in every season.

Critical Jack Autoflowering is the powerful autoflowering version of one of the tastiest strains in our catalogue: Critical Jack. This amazing cannabis seed keeps the special scent of the original strain intact and adds all the amazing advantages of autoflowering genetics, making it faster and easier to fill our pantries with top-quality smelly buds. Born from the cross between our Critical + 2.0 elite clone and our Haze 2.0 Autoflowering, Critical Jack Autoflowering is the pet strain of the entire Dinafem Seeds team; a real cannabis jewel that all growers should try at least once in their lifetime.


Critical Jack Autoflowering turns into a marvelous mid-sized, branchy and fir-shaped marijuana plant with medium distance between nodes.


Critical Jack Auto is happy to receive all kinds of attention. In fact, if looked after a bit, she’ll deliver incredibly generous crops of dense and elongated resin-packed buds.

Aromas and flavours

Who said the taste of autoflowering genetics was worthless? This automatic hybrid was born to put an end to those rumours and one puff was enough to overturn any prejudices once and for all. So much so that her intense flavour with hints of citrus, cedar and spices has turned her into one of the favourite strains of extraction lovers.


This strain is, without a doubt, the perfect autoflowering for thrill-seekers. Her effect is balanced, physical and cerebral, and produces a very strong sensation of muscle relaxation. An outstanding plant that is ideal for consuming before a relaxing massage late in the day.


She’s just perfect for those cannabis growers looking for a safe bet, quality and velocity, all at once. In fact, in just 80 days and without devoting much time and effort to the growing process, this Dinagirl will be ready for harvest, all healthy and vigorous. Thriving both indoors and outdoors, Critical Jack Autoflowering is capable of delivering more than one crop in a year if we live in a region with warm and long summers. A quick and easy way to increase profits.

Should we decide to cultivate outdoors, she’s ideal for guerrilla-style growing and for cultivating in remote areas. However, given her size and strong aroma, she’s not the most discreet plant and could raise suspicion on the part of our neighbours. Indoors, we recommend a 20/4 light cycle with 600W HPS lamps if we want this cannabis jewel to show her full potential.

The amount of fertilization Critical Jack Auto is capable of taking up can be a bit higher than the range indicated by the manufacturer. Apart from that, a couple of tips: add 1/3 of coco coir to the substrate to accelerate the metabolic processes of the plant and water frequently but sparsely.

Characteristics of
Critical Jack Autoflowering cannabis seeds

Genotype60% Indica / 40% Sativa
CrossCritical + 2.0 x Haze 2.0 Auto
Comprehensive life cycle70-80 days
Indoor yield25-100 g/plant
Outdoor harvest timeEarly April / Late October
Outdoor yield100-230 g/plant
Outdoor height0.5-1 m

*Cannabinoid content (THC, CBD…) may vary depending on external factors such as the growth medium, the grower’s experience, the growing technique (SOG, SCROG…), the environmental conditions and genetic variation.

Dinalab Analysis


Total amount of cannabinoids*: 22.74%

*Cannabis contains at least 113 cannabinoids, which can be either acidic or neutral. When heated – e.g. through smoking, vaping or cooking – acidic cannabinoids decarboxylate and become neutral. This report refers only to the main cannabinoids – acidic and neutral – in this strain.


Total amount of terpenes*: 2.265%

*Cannabis contains over 100 terpenes. These compounds create the aroma unique to each strain and can interact with cannabinoids. This report refers only to the 15 most abundant terpenes in this strain.

These results have been obtained by liquid chromatography coupled to a UV-visible HPLC Detector (HPLC-UV/VIS) for identifying the cannabinoids and by gas chromatography coupled to a flame ionization detector (GC-FID) for the collection of terpenes. The equipment has been previously calibrated and quality control samples were run to assure the accuracy of the results. The data shown here is the average of samples coming from several plants grown from seeds by different growers.

The data contained within this report was collected in accordance with the requirements defined by the United Nations Office on Drugs and Crime in their Recommended Methods for the Identification and Analysis of Cannabis and Cannabis Products. We hereby attest that the information contained within the report has been reviewed for accuracy and checked against the quality control requirements for each method.

What do our customers think?

53 customer reviews
4.98 out of 5 (based on 53 ratings)

All reviews about Critical Jack Autoflowering:

  1. Fast and fabulous

    5 out of 5
    This lady untrained in Coco and unintentional under feed grew to 4" and yealded 150g she smells so dang good can't wait to taste. If you want fast heavy and covered with happiness thos is the one for you.
  2. So flavourful!

    CheckmarkA "verified" checkmark Verified purchase
    5 out of 5
    Love the taste of this one. Grew a one big stick for me, maybe a better pot would have made a difference(?) Also had a bit of issue with bud rot, but I think I was a little heavy handed in the nutes, so that plus the thin pot might be factors. Otherwise bud was nice and chunky, the high is smooth and nice for the afternoon. Growing this one made me interested in growing the fem version so I can get even more of that flavour!
  3. 100% Germination !

    5 out of 5
    Going to be doing my first go with some of these Critical jacks and I’m super stoked how fast they all popped ! Can’t wait to try out other genetics
  4. All good

    5 out of 5
    Best smoke ever good looks nice smell and even better taste!!you will not be disappointed so roll one and let's smoke them.

    5 out of 5
    Bought 3 critical jack auto flower seeds, only 1 germinated ... it’s a beautiful grow and has some amazing buds on just disappointing that 2 of 3 failed
  6. Mr

    5 out of 5
    I have 4 of the critical Jack autos growing at the moment and I have to say it’s been one of the easiest plants I’ve ever grown
  7. Review after harvest

    CheckmarkA "verified" checkmark Verified purchase
    5 out of 5
    Well this plant was a rockstar from start to finish. It was my first grow. Using coco and GH nutrients drain to waste high frequency fertigation. HLG 135W LED. I had calmag issues due to my coco and some high( 60%) RH during lights off in flower. The last 10 days I had started to see fungus gnats in my coco. Despite all this, she took training like a champ. After drying and trim I have just over 7oz (about 200 grams). From one plant seed to harvest in 82 days. Smells great too like diesel and pepper. Sticky and lots of trichomes.
  8. Great genetics

    CheckmarkA "verified" checkmark Verified purchase
    5 out of 5
    Got 2 of these seeds amongst a few more strains. This was my first real attempt at growing. I’m using coco/perlite and GH nutrients. Drain to waste. HLG 135w QB LED I attempted to train The plant and responded very well to LST bend and secure and a trellis net. Got Lots If tops, this plant really gets bushy and lush with growth. Picture is after 1 week, 2 weeks, 3 weeks etc. I’m still a few weeks from harvest. Very curious to see final product
  9. Great genetics

    CheckmarkA "verified" checkmark Verified purchase
    5 out of 5
    My first grow I wanted something easy. I’m at Day 60 now so still a bit to go but so far very impressed. She started to flower on day 22. Pic below was composed of a weekly pic for 8 weeks. I’ll post final yield when I’m done.
  10. Strong genetics a must have

    5 out of 5
    A great strain to grow, she performs so well under low light conditions and even better in higher lighting up to a point. My plant I grew pretty much took care of her self, buds started to really fatten up around week 9-10 from germination, with some really fantastic trichromatic development coating the surrounding raceme-Bud inflorescence. The soil mix I used was 40% Bio terra plus 20% lava soil 20% compost 10% wromcastings 10% hempbedding. Amended with 2tsp of egg shells crushed, and 3G of mycorrhizal fungi propuguales, and finally 25ml of eco thrive charge. I even had a major problem with fungus gnats a one point, the nematodes handled them whilst my plant stayed strong. I used 80w LED up to week 8 (only lights I could afford at the time) and I upgraded to 600w LED on week 9 which made a big impact on my plant coming into flower...Anyway apart from that it was a lovely smoke also and I would highly recommend this strain to anyone who wished to grow good quality auto flowering cannabis. Great work by DINAFEM, Thank you!
  11. Love this strain

    5 out of 5
    My first grow a few years back I ordered some photo-period seeds from other banks and got a free Dinafem Critical Jack Auto seed with it. It was the first seed I planted, hoping I could get some quick bud before my photos were done. As a beginner, I had no problems whatsoever growing this plant. While my grow conditions were certainly less than ideal, and my other strains had some mold issues, the Critical Jack Auto thrived into a beautiful plant with an amazing pine/citrus smell. I pulled 2.5 ounces dried and cured of some of the tastiest, dense buds I've had to date from one auto plant - all in less than ideal conditions indoors as a complete newbie. I would recommend this strain to anyone; especially beginners looking for an easy-to-grow strain.
  12. jackiee

    5 out of 5
    excellent genetic, thanks dinafem. she is smells good like pine :))
  13. dinafem

    5 out of 5
    10 out of 10 every time from them every seed has grown into full mature plant i have bought from them keep up the good work and a will keep growing your strains and thanks for the new auto range
  14. Discreet, quick, and reliable service

    5 out of 5
    I'm from Turkey and got my seeds within 10 days -super fast delivery and well packed. I can very highly recommend them, you wont be disappointed!
  15. fantastic customer support !

    5 out of 5
    I bought 3 seeds and two failed ( probably my fault ) but Dinafem replaced them which frankly amazed me, but because of this great attention to customer s needs, I have just purchased from them again.Highly recommended. Such a change to find this service still exists. Thanks Bob.
  16. critical jack auto

    5 out of 5
    I bought 5 seeds from you guys all 5 seeds germinated 3 weeks into grow10 inches plants are awesome thank you Donna them
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