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M 39 Cannabis Seeds Feminized

$52.00

5 Seeds Per Pack

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A very fast, easy indica classic with 18.5% THC, long a staple for growers in Quebec and Ontario. Original QCS genetics, bred by Quebec Cannabis Seeds in Quebec, Canada. See the grow diaries on GrowDiaries.

Indoor flowering time39–43 days
Outdoor harvest timeEarly to mid-October

Strain at a Glance

A very fast, easy indica classic with 18.5% THC, long a staple for growers in Quebec and Ontario. Original QCS genetics, bred by Quebec Cannabis Seeds in Quebec, Canada. See the grow diaries on GrowDiaries.

Genetic Balance

Indica

Key Information

  • THC18.5%
  • GeneticsSkunk No.1 and Northern Lights lineage (F2)
  • Indoor flowering time39–43 days
  • Outdoor harvest timeEarly to mid-October

Specifications

StrainM 39
Seed typeFeminized
GeneticsSkunk No.1 and Northern Lights lineage (F2)
Genetic balanceIndica
THC18.5%
Indoor flowering time39–43 days
Outdoor harvest timeEarly to mid-October
Yield350–450 g indoors, 500 g outdoors
Pack size5 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 →

About M 39

Genetics & strain profile

M 39 (M-39) was released by one of the oldest, now retired, seed banks in Holland. Its indica-dominant genetics and ease of growth made this hardy strain a staple for Canadian growers from Quebec to Ontario and beyond. It has 18.5% THC and is easy to grow.

How M 39 grows

It grows quickly, with good branching and an easy-to-trim finish. It is discreet, low to the ground, and flowers in just 39 to 43 days, with 350 to 450 g indoors. It copes well with the shorter seasons and harsher conditions of northern regions, with about 500 g outdoors.

This strain is an F2, so expect three different phenotypes: a Skunk, a Northern Lights and an M-39. That makes it a good choice for phenotype hunting.

Taste and effect

An old-school flavour and a clean high, with a relaxing body buzz.

Choose your pack5 Seeds Per Pack. Set the quantity above to see the price and availability.

Frequently Asked Questions

How long does M 39 take to flower?

39 to 43 days.

How much does M 39 yield?

350 to 450 g indoors, and about 500 g outdoors.

How strong is M 39?

It has 18.5% THC.

Is M 39 easy to grow?

Yes. It is easy to grow and copes well with short northern seasons.

What are the parents of M 39?

It is an F2 from Skunk No.1 and Northern Lights lineage, and gives Skunk, Northern Lights and M-39 phenotypes.

Where can I buy M 39 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.
  • Manufacturer: QCS Originals — bred by Quebec Cannabis Seeds
Shawn | 5/5
14/08/2025

Très bon pousse vraiment bien bonne odeur malade
Mark | 4/5
13/05/2023

Bought thinking the were f1 fem.not f2’s but I’ve been VERY happy with this sites customer service, (beam me up!), and the genetics I’ve bought (5-7 strains), more than HAPPY!
And yes, brings me back to Karl’s 80s work- the best treats around in the day!
Evan | 5/5
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, but the one that did pop is coming along very vigorously. Can't wait for dhe old school M39 i so enjoyed as a teen in the mid 2000's. They also told me I would be getting new seeds, very kind. Thank you QCS! You are my go to from here on out.
Evan | 5/5
02/04/2023

Just had contact with company, everyone I talked to was nice the seed that germed is coming along nice and vigorous and they let me know that the paper towel germination isn't the best method and they will be giving me some replacement seeds, very good customer service thank you QCS!
Canuk | 5/5
24/03/2023

Still one of the best end product to this day. This is the real deal.
CA Dan | 5/5
15/10/2022

M 39 is a VERY stout plant. It can take any climate as far as I can tell. If you’re old enough to say that the shop weed is not as good as what we got in the 80’s and can’t find anything that is… This is. If you grow this 48” plant and grow it out right. You will hear the same comments I have. It’s way way better than most strains. It’s about the only old school Dutch seed out there that will take you back and allow you to show others what you were telling them about. The green bud you got back in the day. It’s a pain to harvest. It’s yield is low. If you do grow it you’ll have something spectacular. This is the “Mean Green”. It was 94 F the day I cut em down here. It may respond better in higher temps potency wise. Given the breaded I kinda doubt it. This is the best end product I have found anywhere. I’m 57 years old. Get after it old timers. Happy growing everyone!
Yann brunelle | 4/5
17/01/2021

Je c’est pas si c’est possible de m’avertir quand les graine de m39 seront disponibles
Louis | 5/5
01/11/2020

Disponible bientôt ? Merci
m-f l | 5/5
12/10/2020

pour quand la disponibiliter
Rejean | 2/5
09/06/2020

Il y a beaucoup de out of stock
pourquoi en offrir autant...
Reply from QCS Seeds22/10/2026
Sorry this one didn't turn out as hoped. Every pack is covered by our guarantee: delivery is guaranteed, germination is guaranteed at 80%, and if your seeds didn't pop or the wrong pack arrived we re-mail a replacement — no arguments, just contact us. Our germination and growing guides cover the most common causes of a disappointing grow: http://test.quebeccannabisseeds.com/how-to-germinate-cannabis-seeds
— QCS Seeds

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