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Jack Flash 5

Sensi Seeds
Sensi Seed Bank Jack Flash 5

This strain is a masterpiece of genetic breeding. Through selective back-crossing the legendary Jack Herer and Super Skunk, Sensi Seed’s created one of the most outstanding, cannabis-cup winning, and indoor compatible hybrids. It’s plants possess a balanced flavour ranging from fruity to earthy and have a remarkable height to yield ratio.

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3 or 5 seeds per pack
Germination guarantee

In order to be able to claim our germination guarantee, the proof of purchase, the packaging and any unsprouted seed(s) must be kept. In case a seed does not germinate, we ask you to mail these documents and photos and a description of how you proceeded to [email protected], so that we can determine whether you are entitled to our germination guarantee.
If we determine that you are right to claim our germination guarantee, we will replace your non-germinated seeds for new ones.

€ 38,00 Available from stock
Student Discount Collect 7 Spacemiles
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Mo. to Fr. ordered before 16:00 …within The Netherlands delivered tomorrow 1-3 working days* in the rest of Europe

More about Jack Flash 5

Jack Flash #5 is a cannabis-cup winning, carefully balanced sativa-dominant strain with 65% sativa and 35% indica genetics. It’s easy-to-grow plants demonstrate that heavy yields and compact indoor cultivation can go hand in hand. Consumed, this plant high is known to bring euphoric, happy and stimulating effects.

Who could have known that Jack Herer, one of the favourite sativa strains off all time, could be brought to another level? The American cannabis rights activist and „Emperor of Hemp“ (Jack Herer) would most certainly be quite flashed to see this strains existence. His legacy to decriminalise and legalise cannabis started an unstoppable movement which cannabis cultivators worldwide can now celebrate and pass on with strains such as this one.


The strain comes with two distinct phenotypes:

One phenotype is more indica-typical, compact, chunky version with large buds reaching up to 100cm. Furthermore, characterised by a bushier, squatter structure with huge and stable calyxes this plant is ideal for the cultivation in greenhouses, SOG-system (Sea of Green), SCROG (Screen of Green), and supercropping too.

The other phenotype is more sativa-typical, taller, flourishing with especially in bigger spaces. Given room to grow and develop, this phenotype reaches outdoors heights of about 215 cm. Even indoors, heights up to 180cm can be achieved by with this type. This type shows thin lateral branches, covered with weighty buds in the classical spiral formation.

With only 55 to 75 days of flowing time, this feminised seeds allow even entry level cannabis cultivator to focus on the essentials of the plants growing process. Due to it’s delicate high-end genetics, more experienced gardener’s are known to reach with this strain even heaviest yields. Outside, it’s plants frequently produce outlandish 600 grams each. Towards the end of the flowering period, heavy buds coated in resin, make this a strain where often wished for characteristics unified in a single plant become true.



  • Feminized Cannabis Seeds
  • Cannabis Cup Winner
  • Sunny / Mediterranean
  • High plant
  • Flowering 55 - 75 days
  • Heavy Yield
  • 65% Sativa / 35% Indica 

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Jack Flash 5 € 38,00
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