Auto Northern Lights brings the legendary indica classic into an autoflowering format — with 20–22% THC, a deep body effect and the characteristic earthy aroma of the original. Finished in 70 days from germination, up to 750 g/1.5 m² under LED, no light schedule needed. Buy Auto Northern Lights Pyramid Seeds direct from the breeder. (Also searched as "northern lights auto", "northern lights autoflower", "northern lights automatic" or "northern light auto".)
Key specifications
| Genetics | Northern Lights |
| Genotype | 90% indica / 10% sativa |
| Seed type | Autoflowering, feminized |
| THC | 20–22% |
| CBD | Low (< 1%) |
| Flowering indoor | 70 days from germination (LED: 63 days) |
| Yield indoor | 400 g/m² | up to 700–750 g/1.5 m² (720 W LED) |
| Yield outdoor | 70–200 g/plant |
| Height indoor | 60–150 cm |
| Height outdoor | from 100 cm |
| Dominant terpenes | Myrcene, caryophyllene, linalool |
| Aroma | Earthy, sweet, pine resin |
| Effects | Deep relaxation, strongly sedating, calm |
| Difficulty | Moderate |
Genetics and origin
Auto Northern Lights is based on the legendary Northern Lights — a 90% indica phenotype from an Afghani × Thai selection that has been one of the most famous strains in the world since the 1980s. For the autoflowering variant, the genetics were brought into an autoflower format without changing the characteristic indica profile: same effect, same aroma, no light schedule.
Northern Lights Automatic THC content
With 20–22% THC, Auto Northern Lights is one of the most potent autoflowering strains on the market. Most autoflowering strains sit at 15–18% THC — Auto Northern Lights clearly exceeds that average. The high Northern Lights Automatic THC content explains the intense, long-lasting indica effect that makes the strain so popular.
Northern Lights Automatic effects
The Northern Lights Automatic effect is typically body-focused and deeply sedating — a classic indica experience:
- Deep muscle relaxation — a narcotic body effect, tension releases quickly
- Stress relief — ideal in the evening after a long day
- Sleep support — a sedating effect at higher doses
- Calm serenity — a relaxed mood lift without cerebral over-activation
The effect sets in quickly and is pronouncedly physical — ideal for the evening and for recovery.
Aroma and flavour
The aroma profile of Auto Northern Lights is the unmistakable NL profile: earthy, sweet, with clear pine-resin notes and a slightly spicy finish. The smell during flowering stays discreet — one of the hallmarks of Northern Lights genetics and a clear advantage for indoor projects and balcony growing.
Auto Northern Lights terpene profile
The terpene profile reflects the classic indica origin: earthy, calming, warm. The three dominant terpenes:
| Terpene | Typical impressions | Contribution to the profile |
|---|
| Myrcene | Earthy, musky, sweet | Mainly responsible for the sedating, relaxing effect — the "couch-lock" terpene |
| Caryophyllene | Spicy, peppery, warm | Adds spicy depth and balances the earthy base profile |
| Linalool | Floral, slightly sweet | Supports the strain's anxiety-relieving and sleep-promoting effect |
Together they form a classic indica terpene profile: calming, warm and earthy — ideal for anyone who values Northern Lights not just for the effect but for the authentic aroma.
Northern Lights Automatic flowering time & harvest
The flowering time of Auto Northern Lights is 70 days from germination — as little as 63 days under LED. No light switch needed, no separate vegetation period.
Outdoor harvest (northern hemisphere):
- First sowing April/May → harvest July/August
- Second sowing June/July → harvest September/October
This makes two harvests per season easily possible in outdoor growing. These Northern Lights auto seeds are feminized and stabilised for a uniform, fast crop.
Growing — guide & tips
Indoor growing
Indoors, Auto Northern Lights flowers in 70 days from germination (LED: 63 days) under a constant 18/6 light schedule. Yield is 400 g/m² under standard conditions; experienced growers reach up to 700–750 g on 1.5 m² with a 720 W LED. The 60–150 cm height is variable — LST training is recommended for more compact setups.
Outdoor growing
Outdoors, Auto Northern Lights delivers 70–200 g per plant from 100 cm in height. The short flowering time is a clear advantage — the plants are finished before the colder autumn weather. No photoperiod timing, a discreet smell, a compact growth habit — ideal for balcony and discreet outdoor growing.
Auto Northern Lights vs Northern Lights Fem: a direct comparison
| Auto Northern Lights | Northern Lights Fem |
|---|
| Seed type | Autoflowering | Photoperiod |
| THC | 20–22% | 20–22% |
| Flowering | 70 days (from germination) | 48–55 days (from flip) |
| Yield indoor (LED) | 700–750 g/1.5 m² | 800–850 g/1.5 m² |
| Yield outdoor | 70–200 g/plant | 500–1,500 g/plant |
| Light switch needed | No | Yes (12/12) |
| Multiple harvests/year | ✅ Yes | Limited |
When to choose Auto, when Fem?
Choose Auto Northern Lights if: you want several harvests per year, grow outdoors without timing stress, are a beginner, or prefer a more compact setup with no light management.
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.
More autoflowering genetics: Auto Northern Lights is just one of our autoflowering strains. Browse the full selection.
Northern Lights family — all variants
Explore the complete Northern Lights family:
Frequently asked questions about Auto Northern Lights
How long does Auto Northern Lights flower? What's the flowering time?Auto Northern Lights flowers in 70 days from germination — as little as 63 days under LED. That's the full cycle with no light switch. Outdoors, this short flowering time allows two harvests per season.
What is the THC content of Northern Lights Automatic?The THC content of Auto Northern Lights is 20–22% — exceptionally high for an autoflowering strain and identical to the classic feminized version. Most autoflowering strains sit at 15–18% THC.
What's the difference between Auto Northern Lights and Northern Lights?The auto version flowers independently of light in 70 days from germination — no light switch, several harvests per year possible, more compact (60–150 cm indoors). The classic Northern Lights Fem needs a 12/12 light schedule but offers much higher outdoor yields of up to 1.5 kg per plant.
Is Auto Northern Lights good for beginners?Yes — Auto Northern Lights is one of the most recommendable autoflowering strains for beginners. No light management needed, robust genetics, a fast harvest in 70 days. The difficulty is moderate — some basic knowledge of watering and feeding is recommended.
What is the Auto Northern Lights yield?400 g/m² standard indoors, up to 700–750 g/1.5 m² with a 720 W LED. Outdoors, 70–200 g per plant. With two harvests per season possible, the annual total can be considerable.
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