(14 customer reviews)

Jack Flash Feminized Seeds

From: $29.99

For lightning fast relief from stress, plant Jack Flash marijuana seeds in your therapeutic garden.

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Few strains can boast the kind of lightning-fast relief as Jack Flash marijuana, and award-winning hybrid that will out-race negative feelings in no-time flat.


Within seconds of taking your first toke of Jack Flash marijuana, you’ll notice a head rush that has been described as psychedelic (and one of the main reasons Jack Flash is recommended for experienced consumers). Soon, the rush will dissipate, though the happiness will remain, along with a desire to be creative and active. As that initial burst of energy wanes, the body feels heavy and lethargic.


Stress is no match for Jack Flash marijuana (though, its distinct potency and often ample THC content suggest consumers dose with caution), and patients have also turned to the hybrid for its ability to help cope with conditions like headaches.


The pungent and earthy aroma of Jack Flash marijuana is carried over from its haze parentage, and even the hints of citrus can’t make this strain’s aroma more appealing – not the choice if you’re opting to smoke undetected. It’s flavor, on the other hand, can be considered more subdued, with a citrusy undertone and a gentle smoke that hints at exotic wood.


Just slightly indica-dominant, Jack Flash marijuana seeds produce tall plants with long, thin leaves and round buds covered in resin and orange pistils. Gardeners should be comfortable with pruning sheers if they want to boost the yield of this hearty strain – you’ll want to keep bushy branches and leaves trimmed to allow the maximum amount of light to shine through. At 9-10 weeks, Jack Flash marijuana requires a longer flowering period than most, but the patient gardener will be rewarded with 12-16 ounces of resinous flower.

Additional information


Advanced Genetics

Cannabis Species

Indica/Sativa Hybrid


60% Indica/40% Sativa

Flowering Time

60-70 days



CBD Level

Moderate (3-10%)

Feels Like

Creative, Energetic, Focused

Yield Indoors (per m²)

Up to 450g/m²

Yield Outdoors

Up to 600 gr

To Treat

Depression, Pain, Stress


Citrus, Sweet, Woody

Skill Level


Plant Sex


Flowering Type






14 reviews for Jack Flash Feminized Seeds

  1. A. Cooper (verified owner)

    It’s my natural go-to reliever because I love how it kicks in and leave you feeling so good. Why waste your time with things that take forever to work when you can get instant relief? There’s really nothing else to think about. The stress is gone and it’s all good.

  2. Salvador Mendez (verified owner)

    Jack Flash is the name, and growing this strain was a blast! With its energizing and creative high, it really got my creative juices flowing. The citrus and sweet taste was a delightful treat for my senses. The buds were dense and frosty, producing a fantastic yield.

  3. 1RadiantRaven (verified owner)

    With its pungent aroma and potent effects, Jack Flash is not for discreet smoking. However, it induces happiness, creativity, and activity, while effectively relieving stress. The strain has a longer flowering period of 9-10 weeks, but can yield 12-16 ounces of resinous flower. With its tall plants, round buds, and orange pistils, Jack Flash is a visually stunning strain that delivers on both potency and yield.

  4. Michelle Harmon (verified owner)

    After a 10 week wait the flowers on this seed rewarded me greatly! This is a hard seed to grow and requires lots of TLC and attentiveness to meet its conditions. Be sure to care for it and it’ll take care of you after with great citrus sweetness.

  5. Noobzilla (verified owner)

    Was surprised how hard this hits with a nice energetic focused high to combat stress and help you go on with your day. I sometimes sneak off on my lunch break to smoke this and come back to crush work. Great active high with great taste, highly recommend!

  6. Jarrod Liu (verified owner)

    An excellent quality strain, I enjoyed the nice light high from this and the great flavors this strain holds, really has a nice smooth hit to it. Growing this was quite difficult and takes a bit of a seasoned veterans touch to get the most out of the yields, but with the right care you are sure to be rewarded with a lot of quality buds.

  7. Kaitlyn B. (verified owner)

    This is one hell of a sativa strain. It’s Jack herer x10! I swear I never had so much energy in my life. Which is great because I am a very active stoner. I like to smoke and then take a run, or a hike, or even hit the gym (I know I am crazy like that). Jack Flash is bright, citrusy, sour, and all-around awesome. It’s almost better than coffee!

  8. Jocelyn Fritz (verified owner)

    You ready for some awesome vibes? Jack flash is the perfect sativa for your day off! Whatever your passion, hiking, surfing, or video games, you’ll be sure to enjoy it even better with Jack flash weed. And even if gardening isn’t your thing, you’ll LOVE that these seeds are feminized and grow well on their own!

  9. Brooklyn Preston (verified owner)

    Jack flash is the sativa of your dreams. It’s like jack herer on steroids! Takes a LONG time to grow, but it’s worth it friends. Nothing it better than homegrown weed!!!

  10. Jedd Hopper (verified owner)

    Fast growing strains require the greatest attention. Yes, you may get nug in 4/5 months, but baby you better be watering every day! Otherwise this plant gets droopy and sad. 500 grams tho. Not too Shabby 😉

  11. Roxy Walter (verified owner)

    Jack flash gets the job done in a hurry. Great for back pain, neck pain, leg pain, you name it. I smoke this when my Crohn’s starts flaring up for some fast symptom relief. The sweet gray smoke filling my lungs gives me a sense of peace and calm. A truly amazing strain.

  12. Hajra Redfern (verified owner)

    I find the bright citrusy energy emanating from this weed to be euphoric and relaxing. I am usually only a weekend smoker, so I bought my seeds online, gave them a good amount of time to grow, and within 6 months I was harvesting so much my tools just gunked up and I had to soak them in alcohol lol. VERY fresh nug.

  13. Aine Landry (verified owner)

    I think this weed is called jack flash cause it hits super hard and super fast. I’d say it’s primarily a medical strain, but does the trick if you like to smoke recreational weed, too. It’s a painkiller, basically eliminates back pain, neck pain, and gives me a little energy and optimism. Not the easiest strain to grow, but the results make it well worth it.

  14. Jake Davis (verified owner)

    Jumpin Jack Flash! Yes! That is right, I ordered this weed online and it shipped very quickly to my home. Great smelling strain with a nice sativa body high, great for playing music and being creative. Such an awesome experience getting to grow my own pot in my very own backyard!! Such a sweet buy, with some great mental health benefits. Don’t pass up this emerald green beauty!

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