Jack 47 F1 Fast Version is a feminized, photoperiod-dependent Fast Version hybrid made from Jack 47 Auto and an elite Jack 47 clone. The result keeps a strong 75% Sativa influence while cutting about one week from the flowering time of the original Jack 47.
Sweet Seeds bred this cultivar for growers looking for vigorous plants and an unusually quick 7–8 week indoor flowering period.
The plants develop thick buds that become heavily coated with resin during flowering. The personality is just as hard to ignore, with bold effects, an expressive aroma, and a memorable flavor.
Jack 47 F1 Fast Version also took 3rd Prize in the Indoor Sativa category at the II Copa del Rey in Bogotá, Colombia, in 2016. We think Jack 47 F1 Fast Version seeds make a compelling pick when you want photoperiod control with a faster finish.
Effects
With 18–24% THC, the experience is described as psychoactive, stimulating, creative, and relaxing.
The mind can feel switched on and creatively charged while relaxation gradually settles into the body. That combination gives Jack 47 F1 Fast Version an interesting rhythm.
It is less like hitting a wall and more like catching a fast train that eventually finds a quieter stretch of track. Its Sativa dominance supports a lively personality, while the relaxing component adds balance.
Flavor
Jack 47 F1 Fast Version opens sweet and fruity before citrus starts cutting through the softer notes. Orange and mango add a ripe tropical character, while floral and incense tones give the profile another layer.
The lemony edge keeps everything feeling fresh rather than heavy. The flavor rolls across the palate like tropical fruit tossed through bright citrus sparks and a curl of incense smoke.
We really like this strain for that contrast. Jack 47 F1 Fast Version combines sweet fruit, citrus, orange, mango, floral tones, and incense into a bright and layered aromatic profile.
Jack 47 F1 Fast Version Characteristics
| Strain type | Feminized, photoperiod-dependent, Fast Version |
| Genetics | Jack 47 Auto × Jack 47 elite clone |
| Indica/Sativa | 25% Indica / 75% Sativa |
| THC | 18–24% |
| CBD | 1.4% |
| Effect | Psychoactive, stimulating, creative, relaxing |
| Flavor | Sweet, fruity, citrus, orange, mango, with floral and incense notes |
| Indoor yield | 500–600 g/m² (1.64–1.97 oz/ft²) |
| Flowering time | 7–8 weeks |
| Structure | Exceptionally vigorous plants |
| Bud appearance | Thick, heavily resin-covered buds |
FAQ
Is Jack 47 F1 Fast Version seeds Indica or Sativa?
It is 75% Sativa and 25% Indica, giving it a clearly Sativa-dominant genetic profile.
What terpenes does this strain have?
The supplied breeder data does not specify individual terpenes. Its aroma profile includes sweet, fruity, citrus, orange, mango, floral, and incense notes.
Is this strain good for beginner growers?
The breeder describes the plants as exceptionally vigorous, but the supplied data does not provide an official difficulty rating.
How to grow Jack 47 F1 Fast Version seeds?
Grow them as feminized photoperiod cannabis seeds and plan around their fast 7–8 week indoor flowering period. The breeder reports indoor yields of 500–600 g/m² (1.64–1.97 oz/ft²).
How fast does Jack 47 F1 Fast Version flower?
Indoor flowering takes about 7–8 weeks. Sweet Seeds states that this is around one week faster than the original Jack 47.
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