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Critical Jack Feminised Seeds


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We crossed our Critical+ with the most productive sativa in our catalogue of mother plants - the only one capable of flowering in 70 days, producing up to 21% THC, and yielding over 600 gr/m2 !!

Breeder: Dinafem

Availability: In stock

Product Name Price Qty
Critical Jack 1 Pack
Critical Jack 3 Pack
Critical Jack 5 Pack
Critical Jack 10 Pack


It has an intense fruity flavour, but in some samples this varied to a lemony taste of wood.

Very productive, an authentic flower producing machine whose flowers are very regular in size and homogenously placed on the branches.

There is a clear increase in strength and a noticeable resistance against damp and fungus.

Critical has become the most well-known and intensely cultivated variety of cannabis in Spain over the past two years. The cultivating revolution caused by the arrival of Skunk to the US, and later to the Netherlands, finally reached Spain 20 years later, but under another name: Critical.

The reason is that the Skunk# 1 genetics are dominant in this strain, which is also composed of an Indica variety of Afghani origin, a highly productive strain developed on the west coast of the USA, and which received the name of Big Bud.

Mr Nice Seed Bank commenced with this hybrid, naming it Critical Mass. We could say that they became the "godfathers" of the most popular genetics in the whole country. Thank you, Shantibaba, Neville and Mr. Nice! You've done an incredible job! We owe you a few words of recognition because thanks to your hard work (and that of a few others), we have been able to create a truly popular seed.

Additional Information

Seed Bank Dinafem
Seed Type Feminised
Flowering Type Photoperiod
Genetics Critical+ x Jack Herer
Where to Grow Indoor / Outdoor
Flowering Time 65 Days
Type Mostly Sativa
Yield Indoor: 625 g/m2 - Outdoor: 1200 g/p
THC High
CBD Medium
Height Up to 3m

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- only £3.50 for orders up to £25.00

- only £7 for Special Delivery


Rest of the World

- FREE if order value exceeds £250.00 GBP

- only £10.00 for orders below £250


All orders despatched within 24 hours (if in stock).

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We accept the following currencies GBP, EURO and USD (notes only) & strongly advise that a Registered Delivery service is used.

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