Northern Lights is one of the most influential cannabis strains in the world — a 90% indica phenotype from an Afghani × Thai selection that has set the standard since the 1980s. With 20–22% THC, a deep physical effect, a discreet smell and up to 850 g/1.5 m² under LED, it's one of the most reliable classics for indoor and outdoor growing. Pyramid Seeds has cultivated this line for over two decades — awarded 2nd place at the Spannabis Cannabis Champions Cup 2007. Buy Northern Lights Pyramid Seeds direct from the breeder. (Also searched as "northern lights seeds", "northern lights weed" or "northern lights strain".)
Key specifications
| Genetics | Afghani × Thai |
| Genotype | 90% indica / 10% sativa |
| Seed type | Photoperiod, feminized |
| THC | 20–22% |
| CBD | Low (< 1%) |
| Flowering indoor | 55 days (LED: 48 days) |
| Yield indoor | 500 g/m² | up to 800–850 g/1.5 m² (720 W LED) |
| Yield outdoor | 0.5–1.5 kg/plant |
| Outdoor harvest | Early September (northern hemisphere) |
| Dominant terpenes | Myrcene, caryophyllene, linalool |
| Aroma | Earthy, sweet, woody, pine resin |
| Effects | Deep relaxation, strongly sedating, calm |
| Difficulty | Moderate |
Genetics and origin
Northern Lights emerged in the early 1980s on the US West Coast as a cross of Afghani and Thai — two pure landraces with centuries of history. Later stabilised in the Netherlands, the strain spread worldwide and influenced hundreds of modern hybrids. Its genetic heritage lives on today in classics like White Widow, Shiva Skunk and countless indica crosses. Pyramid Seeds has cultivated this line for over two decades with multiple awards.
These feminized Northern Lights seeds (also sold as Northern Lights feminized seeds or simply Northern Light seeds) produce a compact, resin-heavy indica plant. Whether you call it the Northern Lights strain, Northern Lights weed or Northern Lights cannabis, you're getting the same award-winning Afghani-rooted genetics — stable, high-yielding and beginner-friendly.
Northern Lights THC content
The THC content of Northern Lights is 20–22% — exceptionally consistent and reliable for a classic indica genetics. The effect is intense but controllable — typical of well-stabilised indica genetics without unpredictable phenotype variance. For users with a low tolerance, a careful start is recommended.
According to recent studies, targeted far-red light can increase the THC content of Northern Lights by up to 70%. More on this in our article on Northern Lights THC content and lighting technology.
Effects
Northern Lights delivers a deep, body-focused indica effect. It sets in quickly and spreads as a pleasant heaviness through the whole body:
- Deep muscle relaxation — body and mind come to rest, the classic "body stone"
- Stress relief — ideal after a demanding day
- Sleep support — a sedating effect in the evening, promotes deep sleep
- Pain relief — popular for chronic complaints and tension
Aroma and flavour
The aroma profile combines earthy, resinous sweetness with pine and woody notes. During flowering the smell is noticeably more discreet than many other high-yield strains — a clear advantage for discreet growing projects. On the palate: sweet, spicy, with a slightly woody finish. The profile is instantly recognisable to anyone familiar with classic indica genetics.
Northern Lights terpene profile
The terpene profile reflects the classic Afghani origin: earthy, warm, calming. The three dominant terpenes:
| Terpene | Typical impressions | Contribution to the profile |
|---|
| Myrcene | Earthy, musky, sweet | Mainly responsible for the sedating indica effect — the classic "couch-lock" terpene |
| Caryophyllene | Spicy, peppery, warm | Adds spicy depth, balances the earthy base profile |
| Linalool | Floral, slightly sweet | Supports the strain's anxiety-relieving and sleep-promoting effect |
Growing — indoor and outdoor
Indoor growing
Northern Lights is especially productive in an indoor setup. Its compact structure is excellent for SOG (Sea of Green) and SCROG setups. Flowering time just 55 days — as little as 48 days under LED. Yield: 500 g/m² under standard conditions, up to 800–850 g/1.5 m² with a 720 W LED. Compatible with soil, coco and hydro systems.
Outdoor growing
An early September harvest in the northern hemisphere is ideal for temperate climates — earlier than most photoperiod strains. A short season is no problem: Northern Lights flowers fast and reliably even when the summer months are shorter. 0.5–1.5 kg per plant is realistic. Compact, inconspicuous growth — suitable for balconies and small gardens.
Northern Lights Fem vs Auto: a direct comparison
| Northern Lights Fem | Northern Lights Auto |
|---|
| Seed type | Photoperiod | Autoflowering |
| THC | 20–22% | 20–22% |
| Flowering | 55 days (from flip) | 70 days (from germination) |
| Yield indoor (LED) | 800–850 g/1.5 m² | 700–750 g/1.5 m² |
| Yield outdoor | 0.5–1.5 kg/plant | 70–200 g/plant |
| Light switch needed | Yes (12/12) | No |
| Multiple harvests/year | Limited | ✅ Yes |
When to choose Fem, when Auto?
Choose Northern Lights Fem if: you want maximum outdoor yield (up to 1.5 kg/plant), are an experienced grower and prefer full control over the vegetation period.
Choose Northern Lights Auto if: you want several harvests per year, grow outdoors without timing stress, or are a beginner.
Northern Lights family — all variants
Alongside the feminized classic version, we offer the complete Northern Lights family:
Frequently asked questions about Northern Lights
What is the THC content of Northern Lights?The THC content of Northern Lights is 20–22% — consistent and reliable for a classic indica genetics. The CBD variant contains 7–12% THC at 15–18% CBD.
When is Northern Lights harvested?Outdoors in the northern hemisphere, in early September — ideal for short seasons. Indoors after 55 days of flowering (under LED: 48 days).
Is Northern Lights indica or sativa?Northern Lights is 90% indica and 10% sativa — one of the purest indica lines in the catalogue. The effect is correspondingly body-focused, sedating and deeply relaxing.
How strong does Northern Lights smell when growing?Noticeably less than many other high-yield strains. The smell is there, but discreet — a clear advantage for indoor projects or balcony growing.
Is Northern Lights good for beginners?Yes. Robust genetics, uncomplicated growth and forgiving cultivation behaviour make it an excellent introduction to indica growing. The difficulty is moderate.
What is the Northern Lights yield?500 g/m² standard indoors, up to 800–850 g/1.5 m² with a 720 W LED. Outdoors, 0.5–1.5 kg per plant — high for such a compact, fast-flowering indica.
Pyramid Seeds — over 20 years of experience in cannabis breeding. Direct shipping from Barcelona, discreet and fast worldwide.
