Northern Lights Autoflowering
Cannabis seeds
by Greenhouse Seeds
Northern Lights Autoflowering Cannabis Seeds
Northern Lights Autoflowering is a feminised autoflowering cannabis seed from Greenhouse Seeds that delivers indoor yields up to 800g/m² in roughly 10 weeks from seed. She flips to flower after just two weeks of vegetative growth — no light schedule changes needed — and finishes at a compact 90–120cm. If you want dense, resin-caked buds without babysitting a photoperiod timer, this is the seed to start with.
Which Pack Size of Northern Lights Autoflowering Seeds?
Three packs are available: 3, 5, and 10 seeds. If you're running a single tent or a small SOG setup, the 3-pack gives you enough to fill a 60x60cm space comfortably. The 5-pack is the sweet spot for most growers — enough plants to fill an 80x80 or 100x100 tent and still have a spare if germination throws you a curveball. Go for the 10-pack if you're running a ScrOG across a full square metre or planning successive harvests. At this yield potential, even three plants can produce a serious stash.
| Pack | Seeds | Best For |
|---|---|---|
| 3-pack | 3 | Small tent, single SOG run, first-time autoflower growers |
| 5-pack | 5 | Medium tent, standard SOG/ScrOG, most home growers |
| 10-pack | 10 | Full m² ScrOG, commercial setups, successive harvests |
Specifications for Northern Lights Autoflowering
| Spec | Value |
|---|---|
| Seed Bank | Greenhouse Seeds |
| Seed Type | Autoflowering, Feminised |
| Genetics | Northern Lights Auto |
| Vegetative Period | Approximately 2 weeks |
| Flowering Time | Approximately 8 weeks after veg |
| Total Seed-to-Harvest | Approximately 10 weeks |
| Indoor Yield | Up to 800g/m² |
| Outdoor Yield | 100–150g per plant |
| Plant Height | 90–120cm |
| Recommended Setup | SOG, ScrOG |
| Aroma | Hashish and incense |
| Effect Profile | Uplifting cerebral combined with body relaxation |
Running Northern Lights Autoflowering in a tent? Pair her with a complete grow kit that includes lighting, ventilation, and a carbon filter — she produces a strong hashish-and-incense aroma in late flower, so carbon filtration is not optional if discretion matters. A set of fabric pots in 11L works well for her compact root zone.
Why Northern Lights Autoflowering Seeds Deserve a Spot in Your Tent
We've seen growers agonise over photoperiod strains — flipping light schedules, worrying about light leaks causing hermaphroditism, extending veg to fill a screen. Northern Lights Autoflowering sidesteps all of that. She enters flowering on her own internal clock after roughly two weeks of vegetative growth, regardless of your light cycle. That means you can run 18/6 or 20/4 from seed to chop without touching a timer. For growers with limited space or limited patience, that's a genuine advantage.
The yield figures are what make this one stand out from the autoflower crowd. Up to 800g/m² indoors is exceptional for any cannabis plant, let alone an auto. Most autoflowers top out around 400–500g/m² in ideal conditions. Greenhouse Seeds has pushed the genetics hard here, and it shows. Outdoors, expect 100–150g per plant — respectable for a plant that finishes in about 10 weeks total and stays under 120cm tall. She won't tower over your garden fence.
The one honest watch-out: that 800g/m² figure is the ceiling, not the floor. You'll need proper lighting (at least 400W HPS or equivalent LED per square metre), good airflow, and a solid feeding schedule to get anywhere near it. First-time growers running a basic setup should realistically expect 400–600g/m², which is still a very strong result. If you're comparing autos and want sheer weight, Northern Lights Autoflowering from Greenhouse Seeds outperforms most competitors in the same price bracket. If you're after something with a shorter final height for a micro grow, look at a strain that stays under 70cm — this one stretches to 90–120cm and appreciates a bit of headroom.
What Northern Lights Autoflowering Buds Look and Smell Like
In full maturity, the buds on Northern Lights Autoflowering are huge, elongated, and rocket-shaped — the kind that make you reach for a bigger jar. They're covered in very long stigmas (those orange-red hairs) and absolutely caked in trichomes. Greenhouse Seeds describes them as looking like they've been rolled in sugar, and that's not marketing fluff — the resin production on this strain is hands-down exceptional. You can feel the stickiness through nitrile gloves during trim.
The aroma is distinctly old-school: hashish and incense, the kind of smell that takes you back to an Amsterdam coffeeshop in the late '90s. The flavour follows the nose closely — earthy, resinous, with that classic hash undertone. If you prefer fruity or citrus-forward strains, this isn't that. Northern Lights Autoflowering is for growers who appreciate a deep, spicy, traditional cannabis profile. We'd pick this over a generic "candy" auto every time if flavour depth is what you're after.
How to Grow Northern Lights Autoflowering Seeds
- Germinate your Northern Lights Autoflowering seeds using the paper towel method or directly in a small pot of moist, light soil. Taproots typically emerge within 24–72 hours. Autoflowers don't like transplanting, so plant directly into your final container if possible — 11L fabric pots work well.
- Set your light schedule to 18 hours on, 6 hours off from day one. You can run 20/4 if your setup handles the heat, but 18/6 gives the plant a rest period and keeps electricity costs down. She doesn't need a 12/12 flip — flowering starts automatically after roughly 2 weeks of vegetative growth.
- Keep feeding light during the first two weeks. Autoflowers have a short veg phase, and overfeeding early stunts growth permanently. Start at quarter-strength nutrients and build up gradually once you see the third or fourth node develop.
- Once flowering begins (around week 2–3 from sprout), switch to a bloom nutrient formula. She'll stretch vertically during the first two weeks of flower, reaching her final height of 90–120cm. If running a ScrOG, start tucking branches under the net during this stretch period.
- Monitor trichome development from week 7 onwards. Harvest when trichomes shift from clear to milky with around 10–20% amber — this typically happens around week 10 from seed. The rocket-shaped buds will be dense and heavy; support branches with stakes or plant yo-yos if they start drooping.
- Dry in a dark, ventilated space at 18–21°C and 55–60% humidity for 7–10 days. Cure in glass jars for at least two weeks, burping daily for the first week. The hashish-and-incense aroma intensifies significantly during a proper cure.
Frequently Asked Questions
How long does Northern Lights Autoflowering take from seed to harvest?
Roughly 10 weeks total. She spends about 2 weeks in vegetative growth before automatically entering an 8-week flowering period. This is one of the faster autoflowers available from Greenhouse Seeds.
Can I grow Northern Lights Autoflowering outdoors?
Yes. She performs well outdoors and stays compact at 90–120cm. Expect yields of 100–150g per plant. Because she's autoflowering, she doesn't depend on seasonal light changes — you can plant her from spring through to late summer in most European climates.
Is 800g/m² realistic for Northern Lights Autoflowering?
That's the upper ceiling under optimised conditions — strong lighting (400W+ HPS or equivalent LED), proper nutrition, and a well-managed SOG or ScrOG setup. Most home growers land between 400–600g/m², which is still outstanding for an autoflower.
Do I need to change the light schedule for Northern Lights Autoflowering?
No. That's the whole point of autoflowering genetics. Run 18/6 or 20/4 from seed to harvest. She'll flip to flower on her own after about two weeks of veg, regardless of your light cycle.
What does Northern Lights Autoflowering smell like?
Hashish and incense — a deep, earthy, old-school cannabis aroma. The flavour matches the nose. If you're growing indoors, a carbon filter is strongly recommended because the scent is potent, especially in the final weeks of flower.
Is Northern Lights Autoflowering good for SOG or ScrOG?
She's built for both. Her compact 90–120cm height and dense bud structure make her a strong SOG candidate, and the stretch during early flower gives you enough growth to fill a ScrOG net. Greenhouse Seeds specifically recommends her for these setups.
What size pot should I use for Northern Lights Autoflowering?
An 11L fabric pot is the sweet spot. Autoflowers don't like transplanting, so plant directly into the final container. Going larger than 15L rarely adds yield with autos — the short veg period means the roots can't fill a massive pot before flower starts.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.