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Big Jack Cannabis Seeds Feminized
$50.00
5 Seeds Per Pack
A fast, mostly indica hybrid with 19 to 21% THC, very heavy yields and a sweet lemon aroma. Original QCS genetics, bred by Quebec Cannabis Seeds in Quebec, Canada. See the grow diary on GrowDiaries.
Strain at a Glance
A fast, mostly indica hybrid with 19 to 21% THC, very heavy yields and a sweet lemon aroma. Original QCS genetics, bred by Quebec Cannabis Seeds in Quebec, Canada. See the grow diary on GrowDiaries.
Genetic Balance
Key Information
- THC19–21%
- TasteCitrus
- Indoor flowering time55–60 days
- Outdoor harvest timeMid to late September
Specifications
| Strain | Big Jack |
|---|---|
| Seed type | Feminized |
| Genetic balance | Mostly indica |
| THC | 19–21% |
| Taste | Citrus |
| Indoor flowering time | 55–60 days |
| Outdoor harvest time | Mid to late September |
| Yield | Up to 800 g/m² indoors, up to 700 g per plant outdoors |
| Pack size | 5 Seeds Per Pack |
These figures are ranges, not promises. Flowering time, harvest date and yield vary depending on growing conditions: the grower, the method and the season's weather. "Mold resistant" means mold tolerant: less prone to mold and slower to be affected. No strain is 100% mold resistant. How we set these numbers →
Taste & Aroma Profile
A sweet, citrusy fragrance dominated by lemon, which gets stronger as the buds are broken apart.
About Big Jack
Genetics & strain profile
Big Jack is a mostly indica hybrid with 19 to 21% THC. It was selected from indica-dominant genetics for a balance of strength, flavour and ease of growing.
How Big Jack grows
It flowers in 55 to 60 days, which is relatively fast, with up to 800 g/m² indoors with proper care.
Outdoors the plants can grow to 200 to 250 cm and give up to 700 g each, depending on the growing conditions. Aim to harvest in mid to late September, which suits Canada and other northern climates.
Taste and effect
A sweet, citrusy fragrance dominated by lemon, which gets stronger as the buds are broken apart. The high is strong but balanced: clear in the head at first, then relaxing in the body.
Frequently Asked Questions
How long does Big Jack take to flower?
55 to 60 days. Outdoors it is typically ready in mid to late September.
How much does Big Jack yield?
Up to 800 g/m² indoors, and up to 700 g per plant outdoors.
How strong is Big Jack?
It has 19 to 21% THC.
How tall does Big Jack get?
200 to 250 cm outdoors.
Where can I buy Big Jack seeds in Canada?
Right here at Quebec Cannabis Seeds. Orders ship from Quebec within 24 hours on business days, in plain packaging, across Canada and to the USA, with a germination guarantee.
Order with confidence
- Germination guarantee. If fewer than 80% of your seeds germinate, we send replacement seeds.
- Delivery guarantee. We guarantee delivery of your order.
- Discreet packaging. Plain, unbranded packaging with no logos and no mention of the contents. No signature is required.
- Shipped from Quebec within 24 hours. Orders usually ship the same day or within 24 hours of payment, Monday to Friday. Canada: 3 to 7 days, or 2 to 3 days by Express. USA: 1 to 2 business days by Express. Free shipping on orders over $200.
- Your privacy. We do not sell or share your information with third parties.
- Free seeds with every order, and real people to help: 514-805-2741, Monday to Friday, 11 AM to 6 PM EST.
Details: Shipping · Return policy · FAQs · Privacy policy
- Availability: In Stock
- Model: Q.C.S.
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Manufacturer:
14/10/2025
Excellent clone strain. Quite quick to veg too!
27/09/2025
First time growing it but so far so good. I found it was about a week to show flowering than the Quebec blast. No issues yet with mildew or bud rot on either big Jack or Quebec blast. Buds seem a bit more fluffy than Quebec blast. I’m guessing to more weeks for blast and 3 for big Jack so mid October to end weather permitting
17/10/2023
Looking good..lots of weed...quick to harvest..very nice..
02/04/2023
Very good customer service had an issue with my germination which was my own fault they don't recommend the paper towel method, I had Oneonta of my 5 that did pop is coming along nice but not as quick as my 1 M39. looking for a solid outdoor for northern Ontario. They also told me I would be getting new seeds, very kind. Thank you QCS! You are my go to from here on out.
02/11/2022
Viens juste de récolter... récolte très impressionnante , vraiment pas déçu, très belle plante
06/10/2022
pas trop impress pour cette plante ! eux misere a sortir 2 oz . sa pousser monter a 8 pied de haut but sa rien faite de beau !
Désolé que cette culture n'ait pas donné le résultat espéré. Chaque paquet est couvert par notre garantie : la livraison est garantie, la germination est garantie à 80 %, et si vos graines n'ont pas levé ou si le mauvais paquet est arrivé, nous réexpédions un remplacement — sans discussion, il suffit de nous contacter. Nos guides de germination et de culture couvrent les causes les plus fréquentes d'une culture décevante : https://quebeccannabisseeds.com/conseils-essentiels-pour-la-germination-des-graines
— QCS Seeds
03/06/2022
big jack pousse comme de la mauvaise herbe
facile a cultivé la hauteur sera a vérifier en intérieur
pousse super bien aussi topé
des gros cola
au niveau des odeurs il est très discret
gros rendement 10/10
beauté 7/10
buzz 7/10