(22 customer reviews)

Critical Fast Bud Autoflowering Seeds

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As a grower, if it’s speed you’re after from a strain, Critical Fast Bud marijuana seeds are the way to go. As their name suggests, this strain is one of the fastest autoflowering variations in the world, reaching maturity within only five to eight weeks. Critical Fast Bud is similar to Critical Mass in that it grows dense buds that are susceptible to mold if stored or handled unproperly. The best way to avoid molding is to keep Fast Critical Bud flower in an air-tight locked container in a dark, cool place.

Fast Critical Bud is a highly potent strain that’s praised around the world for its fast growth and side branching. Because it grows wider than taller, this strain is ideal for indoor growers who live under low ceilings. This plant doesn’t need much room to grow height-wise. For growers living in cramped spaces, this strain still promises maximum yield under tight conditions, so you’ll have nothing to worry about. This plant can flourish in almost any environment and deliver time and time again on high yields in a short amount of time. What more could you ask for?

Critical Fast Bud has an extreme sweetness with diesel undertones. Because of its high potency, we recommend Critical Fast Bud marijuana seeds to medical users who can take advantage of its strong bodily high. Consumers suffering from sleeping disorders, stress, worries, muscle spasms and most other physically related ailments will truly benefit from these marijuana seeds.

Description: Critical Fast Bud is one of the fastest autoflowering variations in the world. This strain is ideal for medical consumers who suffer from worries.

Additional information


Coastal Genetics

Cannabis Species



70% Indica / 30% Sativa

Flowering Time

45 – 55 days



CBD Level

Low (<2%)

Feels Like

Euphoric, Relaxed, Sleepy

Yield Indoors (per m²)

Up to 500g/m²

Yield Outdoors

Up to 400 gr

To Treat

Insomnia, Pain, Stress


Earthy, Sweet, Woody

Skill Level


Plant Sex

Auto-flowering Feminized

Flowering Type






22 reviews for Critical Fast Bud Autoflowering Seeds

  1. VerdantVirtuoso (verified owner)

    As the name suggests, this weed grows quickly and looks amazing!!! I usually start seeing nugs in about 9 weeks and am harvesting by week 12. I usually glean about 400 G from this plant….and I can’t wait to share this next batch with friends!

  2. Brice Hebert (verified owner)

    Super fresh bud. Makes me extremely happy and upbeat. I can’t believe how well this came together. My plants grew just as intended. They are tall, very bushy and producing some serious flower clusters…It’s almost harvest time, I can FEEL it!

  3. Sofia Duarte (verified owner)

    If you’re in search of fast-growing autoflowering marijuana seeds, look no further than the Critical Fast Bud strain. With a maturity time of just five to eight weeks, this strain is perfect for growers seeking quick results.

  4. A. Johnson (verified owner)

    I hit the jackpot with Critical Fast Bud because its name says it all – it grows super quick. From the time I germinated it until it flowered until I harvested, I was shocked how soon my beautiful bud blossomed. Altogether, it took about six weeks or so. It turned out great indoors since I don’t have a ton of room. These seeds definitely exceeded my expectations.

  5. Diego Santos (verified owner)

    It’s called fast bud for a reason….you can expect your seeds to flower in 9 weeks from germination! That’s probably the quickest turnaround I have seed on this site.
    I am a repeat customer, buy my seeds online every year and have them shipped to Canada, where I live. Great product straight from the west coast. Easily one of my faves!

  6. Ashley Davis (verified owner)

    OMG this plant started to flower after just 2 months! I have never grown a pot strain that produces this quickly! Perfect for an apartment grow, does very well on the balcony and seems to love that early morning LA sunshine! Smells super fresh and amazing!

  7. Faisal Cannon (verified owner)

    Growing Critical Fast has opened the door to so many different strains and growing opportunities. My bud tasted SO fresh I had to share with my weed-farming friends, and they are just in LOVE with my grow. They literally offered me a JOB!! Who knew growing MJ could be such a rewarding hobby, and for so CHEAP!?

  8. Jake Q. (verified owner)

    A tried-and-true strain right here. I’ve grown it before, loved it, and I think I got my biggest yield yet this time. I dialed in some of my nutrients which I think is why. Being an auto-flowering strain Critical Fast Bud is really a no-brainer to grow. Just make sure youre getting good seeds and buy from Pacific. Theyve got the best quality in my opinion.

  9. Salim L. (verified owner)

    A friend asked me where to buy pot and I told him Pacific Seeds. I’ve always been happy with the product , seeds were great quality and grew well.

    Critical Fast is the best weed if you are a basement grower like me! Awesome yields from this weed in a cramped space. Also love that it flowers so quickly. You’ll be experiencing that euphoric full-body high in no time. ?

  10. gboyr76 (verified owner)

    Everything psb wrote about this weed was dead-on. It finished flowering so fast and it grew out instead of up so I got a really really good yield even for an autoflowering plant. Really good looking mj too, I like the hue of the leaves of this strain.

    I had to upgrade my ventilation a little bit because it said this strain has issues with molding fast but even with a pretty basic system I didn’t have any problems at all. I’d order seeds from PSB again too.

  11. Izzy J. (verified owner)

    Being that I’m super impatient I figured this strain would be perfect for a girl like me haha. I mean I’m super busy during the week so don’t have like a ton of time to spend pruning and taking care of the plant or whatever, but I really didn’t have any problems growing this outdoor in my backyard, and now I have soooooo much weed I don’t even know what to do about it, except smoke this shit haha! Well anyway I love the way the crystals look, so fat and orange and taste like citrus and spice. Great way to unwind!

  12. flsr0290987 (verified owner)

    Great grow! Had no issues ordering online and the seeds germinated quickly. As advertised I was harvesting in only 55 days, and kept them in my storage room. Commercial grower in SE Washington by the way. Good product, strong yield. I’ll be back for more.

  13. Garrett T. (verified owner)

    Grows fast and smells good! I observed fast side growth just as the site describes. The flavor is really intense and leads to an overall body buzz. I’m prone to a lot of muscle aches. This strain helped immensely. Can also recommend for sleeping. Put my right out after a nice relaxing card game with my lady. We both slept very well, and my gf even has issues with that. Highly recommend and will order again!

  14. Dustin F. (verified owner)

    SUPER fast grow, took me by surprise, just how fast these plants sprouted and got HUGE. Got a solid 400 grams from my plant and am super stoked on this weed. It’s mega chill, very relaxing but not so powerful that it knocks you off your feet. I like middle of the road strains and this weed does a good job of drawing a balance between alterness and relaxation. Couch lock is definitely real if you smoke too much, so keep it chill like I do and you’ll be in love with this bud!

  15. Harry E. (verified owner)

    I’m a medical user (autoimmune issues since high school). I was apprehensive about growing cannabis and also didn’t want to wait forever but I did my research and found this strain. It worked as advertised — grew quickly and easily.

    Effects come on a little bit slowly but once they do, it’s powerful. Pain relief for up to 4 hours. Highly recommended.

  16. Quincy L (verified owner)

    GORGEOUS BUD! And wow does it grow fast! My plants flowered in only 5 weeks, which is record time for me. Gotta keep em dry or they mold. Easy time getting the seeds germinating and growing. I live in the desert so this strain is a really good one for me. The high was very relaxing and I felt any and all stress ease off after just a couple of hits. First time orderer for Pacific and had good experience. Delivery was excellent. No complaints.

  17. Josie C. (verified owner)

    Here’s to non-addictive pain relief! I was *just about* hooked on oxycodone after my back injury. Not pleasant. Then I tried OTC pain relief, and acupuncture. Best thing I’ve found is cannabis. If only I lived in a medical marijuana state. Anyway, growing these seeds was quick and “painless” and the relief I get is like nothing else. Thank you so much for this.

  18. Eileen M. (verified owner)

    Fast is RIGHT. Got my bud in only 45 days. That’s 45 DAYS PEOPLE. Fast AF! Didn’t have to change the light over on account of the auto-flower, which is the only way to go in my opinion. And in the case of the Critical Fast Bud, you don’t have to compromise on the yield. I got just as much weed as just a regular feminized seed. Awesome seeds that germinate every time. Pacific is the only place I order from now. Nice work!

  19. Luis N. (verified owner)

    45 days for 500 grams? Whaaaaa? I didn’t believe it but had to try it so I ordered these seeds and was absolutely blown away. Like two months from start to finish, unreal. The weed is a great great smoke, super fuzzy feeling body high that helps me get to sleep as soon as I decide it’s time to finally go to bed. No more tossing and turning for me! and I can stay up on this pretty regularly with some rotating indoor plants because they flower so damn fast!

  20. Aliana A. (verified owner)

    You had me at “fast”! I always look for mj that flowers quickly – it seems like I’m always in the position of needing weed yesterday. 🙂 So, I was very eager to grow this strain … and grow quickly, it did! This was like a bush the way it grew, with so many branches, and I actually even propped up some of the branches because I didn’t want them to snap off under the weight of the plant. I love that it was ready for harvest in six weeks! Can you believe it?? Fast grow, easy grow, potent and a great, body high – there’s nothing not to like about my fast bud friend!

  21. Quinten V. (verified owner)

    I moved from the PNW to southern California and I wasn’t sure what kinds of strains I could grow because I went from a humid environment to a desert. So I chatted with the people at Pacific and they recommended critical fast bud because it can grow anywhere. I got a good yield and I really like the high of this weed. I’m going to try buying some other strains but I think eventually I’ll get more of this one.

  22. Timothy A. (verified owner)

    My first go with these plants didn’t go so well, but after following instructions I’ve now successfully grown this strain within about six weeks. It’s trial and error, a true labour of love, but well worth the wait (but more like a quick turn-around). Also very happy with the quick delivery and professionalism of customer service when I called them.

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