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Northern Lights Kush Strain Review: THC, Effects, Flowering Time & Yield

Posted On 10/21/2026 By Trent QCS

Northern Lights Kush is an original QCS strain: a feminized autoflower that is 90% indica with 19 to 22% THC and about 75 days from seed to harvest. This review covers the Northern Lights x Kush genetics, the sweet, earthy and spicy flavour, the body-focused effects, real customer feedback and how to grow it.

Strain profile
Northern Lights Kush
Northern Lights × Kush × Ruderalis · 90% indica · Autoflower · Feminized
19–22%
THC
~75 days
SEED TO HARVEST
300–350 g/m²
INDOOR YIELD
150–250 g
OUTDOOR YIELD
Indica dominant · Easy to grow
SweetEarthySpicy
Autoflower: no light-cycle change needed
Quebec Cannabis Seeds
Northern Lights Kush autoflower cannabis seeds, an original QCS strain bred in Quebec

Northern Lights Kush strain at a glance

GeneticsNorthern Lights × Kush × Ruderalis
TypeAutoflower, feminized, 90% indica / 10% sativa
THC19 to 22%
Seed to harvestAbout 75 days
Yield300 to 350 g/m² indoors, 150 to 250 g per plant outdoors
FlavourSweet, earthy, spicy
Growing levelBeginner-friendly, compact
Pack5 feminized autoflowering seeds
BreederQuebec Cannabis Seeds (original QCS genetics)

THC level19–22%0%10%20%30%Scale 0–30% THC by dry weight. Range from the QCS product page; real results vary by grow.

What is the Northern Lights Kush strain?

Northern Lights Kush is an original QCS strain: Quebec Cannabis Seeds is its original breeder, and these are our own genetics bred in Quebec.

Northern Lights Kush is the autoflowering version of a pairing that indica fans tend to love: Northern Lights crossed with Kush, then given Ruderalis genetics so the plant flowers on its own schedule. It was bred by Quebec Cannabis Seeds, and QCS lists it at 90% indica and 10% sativa with 19 to 22% THC.

Northern Lights is one of the best-known indica lines in cannabis. It is commonly traced to Afghani-leaning genetics selected in North America and then popularised in the Netherlands, and it is famous for resin, a compact build and an easy-going personality. Kush lines come from the Hindu Kush mountain region and are known for dense flowers and earthy, sometimes sweet and spicy aromas. Put them together and you get an indica-heavy plant that is built for relaxing evenings.

Naming caution: breeders do not all use "Northern Lights Kush" for the same plant, and one seed company's numbers can differ from another's. Other seed companies sell strains with the same or a similar name, and their versions may differ, so the numbers on this page are for the QCS version only.

Is Northern Lights Kush indica or sativa?

It is firmly indica. QCS lists the balance at 90% indica and 10% sativa, which makes it one of the most indica-dominant strains in the autoflower range. In the garden that usually means a compact plant, sturdy branches and dense flowers rather than a tall, stretchy structure.

In the jar, a heavily indica profile is commonly associated with a body-centred feel. If you want the longer explanation, read our guide to what indica does to you.

Smell and flavour: sweet, earthy and spicy

QCS describes the taste as earthy and spice, summed up on the page as sweet, earthy and spicy. That is a classic Northern Lights and Kush combination: a soft sweetness at the front, a rich earthy base and a peppery or spicy finish. People who have tried other cuts of Northern Lights and Kush commonly mention pine, hash and woody notes too, so the earthy side of the profile is a safe bet.

As the flowers mature, indica-heavy plants tend to get pungent. Plan odour control for tent grows, and keep your drying space cool and dark so the flavour survives the cure.

Northern Lights Kush effects

QCS describes a strong body high, with relaxation that builds gradually and a subtle lift in the head. That matches what consumers usually report for both parent lines: calm shoulders, a slower pace and a mind that stays fairly clear rather than racing.

Because the THC range is 19 to 22%, it is a solid, not extreme, strength. Effects still vary from person to person, so start with a small amount, wait before taking more, and save it for downtime rather than a busy day. No plant can promise a specific outcome, and this is not medical advice.

How strong is Northern Lights Kush? THC content

QCS lists Northern Lights Kush at 19 to 22% THC. That sits comfortably in the strong range for an autoflower without being among the most potent plants we sell. If you want to go higher, our THC over 25% collection has the strongest options.

Real potency depends on lighting, nutrition, harvest timing and the cure. Harvesting by trichome development rather than by the calendar is the usual recommendation for autoflowers.

Growing Northern Lights Kush: seed to harvest and yield

This is a beginner-friendly plant. QCS describes it as compact, adaptable and highly resistant to pests and diseases, with the standard reminder that no strain is fully mold resistant: "resistant" here means tolerant, not immune. From seed to harvest it takes about 75 days, a single figure that covers the whole life cycle rather than flowering alone.

Yield is listed at 300 to 350 g/m² indoors and 150 to 250 g per plant outdoors, as ranges rather than guarantees. Because it is an autoflower you can plant outdoors after the last frost and use the same long-day light indoors from start to finish.

Autoflowers do best when you sow straight into the final pot, because they dislike transplanting. Keep the medium damp but not soaked, avoid heavy stress, and consider low-stress training rather than topping. See our autoflower guide for a full approach.

Flowering time75 days020406080100days of floweringAutoflower: about 75 days from seed to harvest

Typical yield300–350Indoorg/m²150–250Outdoorg/plant

What customers report

Northern Lights Kush has two reviews on our site, both from the same customer in 2024, and they average 1.5 out of 5. They are mostly about germination and early survival rather than about the flowers, and we think honesty serves you better than hiding them:

  • First review (1 star): by the time of writing only one plant remained. One seedling turned orange and wilted overnight, although the survivor looked like it would make it.
  • Second review (2 stars): only 2 of 5 seeds germinated, but both plants were doing well, about six inches tall after two weeks.
  • Our response: germination is guaranteed at 80%, and if a pack under-performs, you email us and we send replacements.

Two reviews from one grower are a small sample, and early losses can come from many causes, including moisture, temperature and the pot. If you want the best start, follow a germination guide, keep the medium at roughly 22 to 25 C, and contact us right away if fewer than 80% come up.

Is Northern Lights Kush right for you?

Choose Northern Lights Kush if you want a compact, easy autoflower with a strong, calming, earthy and spicy profile. It suits balcony and closet grows and people who prefer an indica evening. If you would rather grow a classic photoperiod plant, browse our feminized seeds.

You might also like our review of Black Cherry OG for another indica-leaning option, or the full autoflower collection.

Why grow Northern Lights Kush from Quebec Cannabis Seeds?

  • Bred in Quebec by the original breeder. Quebec Cannabis Seeds (QCS) is the original breeder of Northern Lights Kush, one of our own QCS Originals, bred here since 2015 by a grower with 35+ years of experience.
  • Guaranteed. 80% germination guarantee with replacements, and delivery guaranteed. If a pack under-performs, email us and we make it right.
  • Free seeds with every order, and free shipping on orders over $200.
  • Fast, discreet shipping. Ships from Quebec within 24 hours Monday to Friday in plain, unbranded packaging, to Canada (Canada Post) and to the USA (1–2 business days by Express).
  • Real support. Every email answered within 24 hours.

Buy Northern Lights Kush seeds → Canada delivery Shipping to the USA

Northern Lights Kush: frequently asked questions

What is the Northern Lights Kush strain?

Northern Lights Kush is an original QCS autoflower made from Northern Lights, Kush and Ruderalis. It is 90% indica and 10% sativa with 19 to 22% THC.

Is Northern Lights Kush indica or sativa?

It is indica dominant: 90% indica and 10% sativa according to the QCS product page.

How strong is Northern Lights Kush?

QCS lists 19 to 22% THC. Start with a small amount if you are new to cannabis.

How long does Northern Lights Kush take from seed to harvest?

About 75 days from seed to harvest. QCS gives one figure for the whole life cycle, not a separate indoor flowering time.

How much does Northern Lights Kush yield?

About 300 to 350 g/m² indoors and 150 to 250 g per plant outdoors, as ranges rather than guarantees.

Is Northern Lights Kush easy to grow?

Yes. QCS describes it as easy to grow and suitable for beginners, with a compact size and high resistance to pests and diseases. It is not immune, so watch humidity.

What does Northern Lights Kush taste and smell like?

QCS describes it as sweet, earthy and spicy.

Where can I buy Northern Lights Kush seeds in Canada and the USA?

Quebec Cannabis Seeds sells feminized Northern Lights Kush autoflower seeds in packs of 5, 10 and 20. We ship across Canada in 3 to 7 days (2 to 3 days Express) and to the USA in 1 to 2 business days by Express, with free shipping over $200 and an 80% germination guarantee.

A note on the numbers in this article: harvest dates, flowering times and yields are ranges, not promises. They vary depending on growing conditions: the grower, the method and the season's weather. No strain is 100% mold resistant. How we set these numbers →

View Northern Lights Kush seeds →

About this article

Published by the Quebec Cannabis Seeds team. QCS was founded in 2015 by Trent LaPierre, a Quebec breeder with more than 35 years of hands-on growing experience. Genetics we bred ourselves are described from our own breeding work; when a strain comes from another breeder, we say so and credit them. How we work. Last updated: November 6, 2026.

Sources and further reading: Cannabis Act (Justice Laws, Government of Canada) · Cannabis Regulations (SOR/2018-144). Rules on cannabis seeds differ by province and state; check your local regulations before ordering.

Disclaimer

This blog is for educational purposes only. It is not legal, medical or professional advice. Cannabis laws vary by region, and you are responsible for knowing and following the laws that apply to you before buying seeds or growing. Results vary with environment, experience and genetics, and any action you take based on this content is at your own risk. QCS and its authors are not liable for any loss or legal consequence resulting from its use.

Avertissement

Ce blogue est offert à titre éducatif seulement. Il ne constitue pas un avis juridique, médical ou professionnel. Les lois sur le cannabis varient selon les régions : il vous incombe de connaître et de respecter celles qui s’appliquent à vous avant d’acheter des graines ou de cultiver. Les résultats varient selon l’environnement, l’expérience et la génétique, et toute action prise à partir de ce contenu l’est à vos propres risques. QCS et ses auteurs déclinent toute responsabilité en cas de perte ou de conséquence juridique découlant de son utilisation.

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