Genetics
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Sativa dominant retail shopping label — not genetics

Jack F1 Strain

Jack F1 is a sativa dominant strain (Northern Light × Skunk). 67-day flowering; effects: energetic, uplifting, exhilarating.

Median THC
Flowering
67 days
Breeder releases
1
Avg rating
7.0 / 10

Indica / Sativa — retail shopping guide

Indica 30%Sativa 70%

Indica, sativa and hybrid are a retail shopping convention — not a reliable guide to genetics or effects. When researchers analysed 89,923 commercial samples across six states, these labels did not predict a plant’s terpene or cannabinoid profile, and a genome-wide study found sativa- and indica-labelled plants to be genetically indistinct (PLOS ONE 2022; Nature Plants 2021). The labels are so fluid that AK-47, a hybrid, won “Best Sativa” at the 1999 Cannabis Cup and “Best Indica” four years later. For an accurate, genetics-true picture, see the chemotype above.

Genetics & Lineage

Parents
This strainJack F1

Effects

EnergeticUpliftingExhilarating

Aroma & Taste

Aroma

LemonStrawberryBlood Orange

Taste

LemonTangerineOrange Blossom

Breeder releases (1)

BreederTHCFloweringSeedsRating
Spliff Seeds67dreg. and fem.7.0/10

About Jack F1

Jack F1 is a Dutch crossbreed between Northern Lights, a Skunk F1 and a Mexican Haze. She is the result of a long and arduous selection process to obtain suitable phenos as parents. We took several generations of thorough back-crossing to her original parents to stabilize the strain, allowing further generations to pretty much give identical offspring. This resulted in our Jack F1. She is a 75% Sativa plant with extremely high THC level. Jack F1 has an Indica appearance, but is definitely a Sativa. However, with a short flowering period. Jack F1 is covered in snowy crystals of resin from top to bottom. Stick to advised nutrients, don’t overfeed. Especially during the vegetative period (4 weeks) keep nutrient levels at a minimum. Keep her on a 24/7 schedule during vegging, to limit height. This advise basically goes for any Sativa. Preferably grown in soil or coco with plenty of space. A Sativa dominant plant she will form one giant main cola, so don’t prune her. Smell is sweet, spicy and slightly cinnamon. The taste is sweet and spicy with a touch of haze. A longlasting cerebral high and body buzz. Classic Sativa high. Highly medicinal strain. Medicinal value: Add, adhd, anxiety, a

Frequently asked questions

What are the genetics of Jack F1?
Jack F1 comes from Northern Light × Skunk.
Is Jack F1 indica or sativa?
Jack F1 is classified as sativa dominant.
How long does Jack F1 take to flower?
Jack F1 flowers in about 67 days.
Is Jack F1 available as feminized or autoflowering seeds?
Jack F1 is offered as: reg. and fem..