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The regular cannabis strain (not feminized) Jack Flash of Sensi Seeds comes from the famous Jack Herer variety, of which it retains many characteristics and improves the ease of indoor and outdoor cultivation. Jack Flash has a taste similar to Jack Herer but with a sweet Skunk touch and a powerful cerebral and euphoric effect with physical touches.

Seeds per pack

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Type and genetics

Jack Flash of Sensi Seeds comes from a selected plant of Jack Herer female crossed with a male (Super Skunk x Haze), under a rigorous selection and successive tests. The result is a plant similar to the original Jack Herer variety, but easier to grow.


It has 2 phenotypes , one more indica and the other more sativa .

  • The indica phenotype is more compact.
  • This phenotype is suitable for SOG growing techniques
  • The sativa type is more suitable to select as a mother, as it has better taste, yield and effect.

Aroma and taste

The flavor is quite similar to Jack Herer, but with a touch more Skunk and sweeter, it remains in the mouth after the puff.


The effect is powerful, cerebral and euphoric with physical touches. It stimulates creativity, ideal for sharing with friends and have fun moments.


It flowers with a long central bud covered with resin. The yield is medium/high.

Flowering in indoor crops

Grown indoors, it finishes flowering in 60 - 70 days, after the relevant growth phase.

Flowering in outdoor crops

Outdoors it is harvested in mid-October in the Northern Hemisphere and in mid-April in the Southern Hemisphere. It is a tall plant.

Percentage Sativa/Indica

55% Indica / 45% Sativa


THC High


1st prize 2007 II Marijo Taxpalketa (Andoain) Indoor

3rd prize Hidro 2007 HighLife Hemp Fair

Opinion of La Huerta

Jack Flash from Sensi Seeds is an award-winning marijuana strain , easier than Jack Herer.

Data sheet

Types of seeds
Regular seeds
Indica sativa percentage
More indica (relaxing)
Flowering time
Long Flowering (+65 days)
Strong effect
Citric flavour
Incensed/Haze flavour
Sweet/fruity flavour
Haze strain
Skunk - Critical strain
Other characteristics
Award winning prize

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