(36 customer reviews)

Critical Jack Autoflowering Seeds

From: $29.99

Critical Jack is a 50/50 hybrid that provides a light smoke with long-lasting cerebral effects, making you feel creative, energetic, and uplifted.

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Can’t decide between an indica or sativa experience? Go with Critical Jack marijuana seeds. This strain is a perfect 50/50 hybrid that delivers the best of both worlds. That being said, many consumers note that Critical Jack’s effects lean toward the sativa side — more energizing, awakening, and mentally stimulating than a true indica. In its true form, this strain is a cross between Critical Plus and Jack Herer. It usually carries a THC level of 20%. Critical Jack has been immensely popular in Europe and has since made its way overseas.


Why choose Critical Jack? Not only is it the perfect daytime smoke, but it’s also easy to smoke for beginners who want to avoid that nasty cough. The smoke of Critical Jack is light but long-lasting. A little goes a long way with Critical Jack. A few puffs in the morning before work can last way past lunchtime. Critical Jack is a great strain for busy men and women on-the-go who need something uplifting and productive to get them through the day.

Additionally, Critical Jack marijuana seeds provide many medical benefits. Critical Jack marijuana plants mature relatively quickly with flowering time between 57-67 days when grown indoors. If grown outdoors, you’ll want to get started in mid-April and harvest in late-September.

Additional information


Norcal Farms

Cannabis Species

Indica/Sativa Hybrid


50% Sativa/50% Indica

Flowering Time

50-60 days



CBD Level

Low (<2%)

Feels Like

Euphoric, Focused, Happy

Yield Indoors (per m²)

Up to 500g/m²

Yield Outdoors

Up to 800 gr

To Treat

Depression, Pain


Citrus, Spicy, Sweet

Skill Level


Plant Sex

Auto-flowering Feminized

Flowering Type






36 reviews for Critical Jack Autoflowering Seeds

  1. Marc Sanders (verified owner)

    Super fresh herb! Gets me nice and stoned and usually is a gem in the yard. Vibrant colors and usually a nice sticky resin on top. I buy online to get the most bang for my buck! Helps with stress, and depression and honestly just working in the garden is the best gift of all. You’d be surprised how good it is for my mental health!

  2. E. Ramirez (verified owner)

    I’ve bought Critical Jack in different forms, but autoflowering has by far been my favorite. They are so ridiculously easy to grow and they grow so fast. I love that since I’m so short on patience lol Once I plant, I want my MJ as soon as possible and this definitely met my needs!

  3. Koichi Nakamura (verified owner)

    Critical Jack autoflowering seeds offer a balanced hybrid strain that combines the best qualities of indica and sativa. With a THC level of 20%, it provides a light smoke that delivers long-lasting cerebral effects. This strain is perfect for beginners and busy individuals, as it provides an uplifting and productive experience.

  4. Louisa Vang (verified owner)

    Critical Jack is an amazing strain for managing my chronic pain. I love its citrus and spicy taste and the euphoric and focused high it provides. Growing it was so easy and the yield was impressive – definitely recommend for beginner growers looking for a low-maintenance, high-yield strain.

  5. Janae Stafford (verified owner)

    Nothing says “I love weed” like buying your own mj seeds online! I personally recommend this strain cause it’s a little easier to grow than most other strains, and it hits real nice! An indica heavy strain for sure, usually good for smoking in the evening, when I am already tired. Helps soothe those aches and pains, and quiets the mind.

  6. Todd Norman (verified owner)

    Make no mistake, this weed WILL change your life. The smell and taste of this strain is unlike any other. The nugs themselves are sweet and fluffy. They look GREAT! I smoke it every morning, and every evening too. It’s an anytime smoke. Fun times and great vibes!!

  7. Skyla Padilla (verified owner)

    I opened up the packet, 3 seeds all perfectly tucked away inside. Like little marbles ready to be put into the ground. Impressed by the fast shipping times Pacific offers their customers, and by the incredible looking marijuana I was able to produce. Can’t wait for that next harvest, gonna be a big one.

  8. Habiba Humphrey (verified owner)

    The jack is back! This weed not only looks great, it tastes great, too! Bought 5 seeds online and had them shipped to my apartment. They are looking fantastic! They grow so FAST and produce so much weed. I can’t believe how nicely this all turned out. Pacific has great seeds at an amazing price!!!

  9. Nicole Robertson (verified owner)

    If you like long-lasting indicas, with a subtle kick in the pants from the sativa undertones, then you most certainly will enjoy this light and easy strain of critical jack Marijuana. Best when grown indoors, especially if you have a greenhouse setting. Looks great in the sunlight and does well in the heat. Produces hundreds of grams of flower after about 6 months.

  10. Lucas Lennon (verified owner)

    Smooth and relaxing, this strain is both uplifting and enjoyable. I bought 5 seeds online, had them shipped to my apartment in Washington and was able to grow them successfully in my closet under some intense grow lights. The smell was a little intense, but the yield was surprisingly high. I am happy to purchase this marijuana online, and will do so again in the near future.

  11. Nyah Burt (verified owner)

    If you’re an indica fan, then you’ll totally dig this strain. It’s got flavors like you wouldn’t believe, and it helps with stress. I am so excited to have this weed in my life, I Had a lot of success when I put this weed in the ground, and it grew taller than me, which was pretty dang awesome. When I harvested the nugs were really sticky and they gunked up my tools. It’s no problem though 🙂

  12. Kai Clay (verified owner)

    It’s time to relax and you need some weed. Why not the critical jack for a change? This stuff is pretty fantastic, makes me feel really good and gives me a NICE buzz. I have never had a problem with this stuff. Like it always germinates and it looks amazing out in the garden. These plants are TA:LL much bigger than expected! Can’t wait to keep it up!

  13. Kajal Morse (verified owner)

    Has been really fun. Easy to order seeds online and have them shipped to my door. The vibe is absolutely amazing. Puts me in a great mood, and also relaxes the body. Brighter than any other weed I have smoked. Has been good for depression and anxiety. Offers up some great mental health benefits…makes me a little less crazy lol.

  14. Mared Church (verified owner)

    Critical jack is pretty alright in my book. Easy growing and a fast turnaround time when you order online. makes for an awesome experiment if you are new to marijuana and need a good challenge when it comes to growing strains. I ordered online, got it shipped right to my place and things are looking pretty great in my garden these days 😉

  15. Nur Ferrell (verified owner)

    This critical jack is gonna get you all kinds of JACKED up, and maybe it’s gonna make you wanna take a run or even go swimming in the lake. Sweeeeet flavor, and a good smelling vibe. Can’t wait for all the best weed to be delivered to my door. PSB for Lyfe!!!

  16. Myla Cooper (verified owner)

    This jack strain is seriously energizing…it’s a brilliantly colored strain…with blues and yellows and orange that hits the light in the most amazing way. I usually roll sweet blunts, and this jack strain is perfect for that breakfast smoke before work…cause we all need something to enjoy, and this weed scratches that itch. Pacific has great seeds, i’m a customer for life now!

  17. Carly Yang (verified owner)

    This weed is sure to make you smile all day long. It’s a great purchase from this online weed megastore and it will ship anywhere in the dang country. Just make sure it’s legal where you’re growing. I am lucky to live in the great state of California and I have nothing but good vibes from this weed every time I smoke!

  18. Aisha Lang (verified owner)

    I am sooo pleased with my critical jack strain, it helps me deal with pain and stress and gets me all kinds of jazzed up for long bike rides and the like. I ordered it online and hafd it shipped to my home here in Oregon and just grew it indoors cause it’s totally awesome!!! The yield is much bigger!!!

  19. donutholes99 (verified owner)

    I was pretty excited to see my new batch of seeds arrive in the mail yesterday. This stuff has been very reliable for me. I have been buying from Pacific for the last year and am pretty stoked about my progress. I ordered online again, had it shipped to my door. Keeps me active in my garden greenhouse all year long. Can’t wait to buy more!

  20. osmand cole (verified owner)

    Wow, I really like this strain, it’s super chill and filled with all kinds of great vibes. I love the color of this bud, it’s super fuzzy and like this golden green color that reall catches the eye. Ordering online is fast and simple, and it shipped right to my door without a hitch. A nice strain for what ails you, keeps me nice and grounded all day long 🙂

  21. Nocturnal (verified owner)

    Critical jack is a magical strain with a lot of mental health benefits. I smoke this in the PM to help me de-stress and go to sleep at a reasonable hour lol. I had fun growing it too, my plant is sooooo tall and bushy! I was amazed that I grew it myself. Highly recommend you try it for yourself!!!

  22. Fredricke Knee (verified owner)

    I think this weed has an excellent flavor, better than most weeds I have smoked in the past. I ordered online and had it delivered to my home here in NorCal, and I grow it in my garden. It’s a beautiful strain with a lot of color, a nice 50/50 split, makes the brain feel like spaghetti, and the body feel like jello, enjoy my images? LOL try it out!!!

  23. Waldorf (verified owner)

    Critical jack is a fact of life….it’s all about staying super stoned and riding that wave of life….like it’s like super philosphical or whatever…has that deep indica vibe…makes you wanna be near the ocean…excellent stuff.

  24. Nike (verified owner)

    It’s real nice weed that helps me with social anxiety. I got 3 seeds from pacific and grew them at home. First time ever! Great buy with a lot of potential for new growers. I really enjoyed the smell and flavor, shared with my girlfriend and we always have a good time. It’s pretty chill, not really a party strain, but nice for listening to music or watching Netflix!

  25. David Ash (verified owner)

    The flower from this weed is super yellow and kinda looks like popcorn. I really like this stuff, it’s a perfect hybrid split, great for my stress and depression. I smoke it in the afternoons and evenings, it’s pretty great any time of day….helps take the edge off, and it smells pretty darn nice as well, pretty earthy and woodsy, maybe a little sweet. Love sharing this with friends and family, good buy!

  26. Amigos (verified owner)

    I finally got my grow space all set up in the backyard…it looks really beautiful with my new little weed plants in the soil. They’re beautiful…watching them grow. They started out so small and now they are waist height. Got a really nice yield off my last batch though, and I came back for more! This weed is really relaxing, helps me deal with stress and depression, especially good after work, when I can finally just sit at home and chill out. Definitely worth the buy!

  27. bertram (verified owner)

    This weed actually helps me a lot at work. It’s a nice, easy lunchtime smoke, doesn’t have too strong a scent so if you roll a spliff you’re in good shape. It’s got a nice mental buzz, helps a lot with stress and fatigue, gets me in the “zone” you know? I got 3 seeds online, had them shipped to my place in LA and got them growing in these huge pots I bought, they actually did really well, kinda surprised, but hey glad it all worked out!

  28. Margaret Q. (verified owner)

    This weed is critically delicious and has some amazing vibes about it. It’s super easy to grow and manage, no complications, and when it’s fully mature you’ll love its HUUUUGE green nugs! I smoke this in the evening to help me unwind and relax, and finally I feel much less stressed about life and am thinking more positive thoughts. Great buy for sure!

  29. Hershel Schaefer (verified owner)

    If you need some fast acting relaxation and pain relief, this weed might just do the trick. It’s wicked good for helping me after work with joint and back pain, and it’s been really helpful at night if I am having trouble sleeping. I grew it in my backyard and want to do it againg and again, it looked amazing I am serious. Thanks PSB!

  30. Dante G. (verified owner)

    This weed hardly even looks like a weed plant lol, more like an exotic yellow flower from a tropical island! But very tasty and delicious smoke for a lovely balanced high that breaks down your inhibitions and makes you want to talk or draw or even just chill out and watch a good movie. Like smoking at work? This weed can help you stay awake and focused, but also relaxed, smoke before your big meeting or whatever, you’ll feel great and very confident. Anxiety really melts away on this weed, great buy!

  31. Stuart H. (verified owner)

    The best marijuana seeds I’ve come across are on PSB. Great quality, great germination rates, I’ve been very happy ordering mj seeds from PSB!
    It took a bit of time to get the dosing just right for the mighty Critical Jack. At first I took too much and it kind of gave me a headache. I learned I only need two puffs in the mid-morning to last me nearly the whole day. The high is really unique and lovely; it’s like a spark that burns all day in my brain. In a good way of course, LOL! Love Critical Jack, gonna order some more when this batch is through.

  32. Carlos B. (verified owner)

    Grew this stuff right in my backyard and WOW in just 3 mo ths I am looking at a gorgeous mary jane plant!! These crystals are dense and yellow…they look like popcorn, yummmmm! Harvested almost 600 G which is CRAZY and have been smoking it ever since….Such a nice balanced buzz and so low-key, this stuff gets you stoned AF but doesn’t knock you out. I LOVE sharing this with my friends on a weekday night, just chilling on my couch. What a treat to finally have my very own MJ!!

  33. Ryan S. (verified owner)

    I’m an incredibly busy person so I was looking for an autoflowering cannabis that had a few qualities: A) I could grow weed with relative ease, B) It wouldn’t prevent me from getting work done, and C) It didn’t have that stigma associated with an autoflowering yield. Critical Jack certainly met all of my expectations! I harvested a good yield after about 8 weeks of flowering, and the high is very pleasant but not overwhelming for those of us who want to mix work and play. Excellent choice.

  34. Damien A. (verified owner)

    A very balanced buzz that’s great at any time of day, worth the growing time and the yield is super stellar, can’t wait to share this with my friends. The bud is huge, has a nice yellow color to it, and is actually very easy for beginner growers to get started on. I can’t think of a better weed for those who love to have a good time without getting tired out!

  35. Nevaeh O. (verified owner)

    Kind of interesting flavor with this weed. Sort of citrusy but earthy and woody at the same time? I really like the high from critical jack and so does my partner. Gets us both relaxed without making us sleep right away. We’re up talking and giggling and having a great time. Also good points for Pacific for sending some really nice looking seeds that grew up into some well-yielding healthy plants.

  36. Jorden R. (verified owner)

    I’m so impressed with the trichomes on my buds! It looks like they got rolled around in a fine dusting of sugar crystals. So lovely! Just got my first. smoke of critical jack and I really like the way it makes me feel energized and focused and like I can get everything done that I need to with me day. I only grew a few of these plants so I think I’ll order some more seeds and grow a few more.

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