Cannabis seeds
by Azarius
Green Poison Auto is an indica-dominant autoflowering cannabis seed bred by crossing the original Green Poison with ruderalis genetics, delivering a fast-finishing plant with thick, resinous buds and a terpene profile that leans heavily into sweet, earthy, and fruity territory. At 70% indica and 30% sativa, this Spanish-bred hybrid wraps you in a mellow body effect with just enough creative headroom to keep things interesting. Flowering wraps up in about 8 weeks from seed — no light schedule fiddling, no photoperiod stress.
Green Poison Auto seeds come in packs of 1, 3, 5, or 10. If you're running a small tent — say a 60x60 or 80x80 — 3 seeds gives you a solid canopy without overcrowding. For a full 120x120 setup or a Sea of Green approach, grab the 10-pack. The single seed is there if you want a test run before committing, but honestly, autos are forgiving enough that you might as well start with at least 3.
| Specification | Detail |
|---|---|
| Genetics | Green Poison x Ruderalis |
| Strain type | Indica-dominant (70% Indica / 30% Sativa) |
| Flowering type | Autoflowering |
| Flowering time | Up to 8 weeks |
| Indoor yield | Up to 500g/m² |
| Outdoor yield | Up to 150g/plant |
| Plant height | 60–100 cm |
| Dominant terpene | Myrcene (30%) |
| Secondary terpenes | Caryophyllene (20%), Pinene (15%) |
| Flavour profile | Sweet, fruity, earthy, pine, spicy |
| Origin | Spain |
| Available packs | 1, 3, 5, or 10 seeds |
Running autos indoors? Pair these seeds with a complete grow tent kit — tent, lighting, extraction, and carbon filter sorted in one go. If you're growing in soil, a root enhancer during the first two weeks helps establish a strong base before the plant shifts into flower. Already got the setup? A jeweller's loupe is the cheapest upgrade you'll make — checking trichome colour is the difference between harvesting at the right moment and guessing.
The appeal of Green Poison Auto comes down to three things: speed, flavour, and forgiveness. Eight weeks from germination to harvest means you can fit multiple cycles into a single season, or just get from seed to jar before impatience sets in. We've stocked plenty of autoflowering strains over the years, and this one consistently delivers dense, frosty buds without demanding expert-level attention.
The yield ceiling of 500g/m² indoors is genuinely impressive for an auto. You won't hit that number under a desk lamp, obviously — proper lighting, good airflow, and a sensible feeding schedule get you there. Outdoors, expect up to 150g per plant, which is solid for a plant that rarely pushes past a metre tall. The compact size makes it a natural fit for balcony grows, small greenhouses, or discreet garden corners.
One honest limitation: because the ruderalis genetics lock in the autoflowering trait, you can't keep a mother plant or take clones in the traditional sense. Every run starts from seed. That's the trade-off for not having to manage light cycles — and for most growers, it's a trade worth making. If you want a photoperiod version with more control over veg time, look at the original Green Poison feminised seeds instead.
Green Poison Auto's terpene profile is dominated by myrcene at roughly 30%, backed by caryophyllene at 20% and pinene at 15%. In practice, that translates to a thick, sugary sweetness on the inhale — think overripe fruit with a candy-shop edge — followed by earthy, slightly spicy undertones and a pine finish that lingers. There's a faint diesel note buried in there too, and depending on the phenotype, some growers pick up a mild cheese funk during late flower.
The aroma during the grow is noticeable. By week 5 or 6, the terpenes are loud enough that a carbon filter isn't optional if you're growing indoors. The cured bud smells like a sweet fruit bowl left in a cedar box — dense, layered, and hard to mistake for anything else. If you've grown classic Skunk-lineage strains before, this carries that familiar pungency but with a sweeter, more complex finish.
Stacking Green Poison Auto against other popular autoflowering strains in the catalogue helps narrow down what suits your setup and taste.
| Feature | Green Poison Auto | Northern Lights Auto | Critical Auto |
|---|---|---|---|
| Genetics | Green Poison x Ruderalis | Northern Lights x Ruderalis | Critical Mass x Ruderalis |
| Type | 70% Indica / 30% Sativa | 90% Indica / 10% Sativa | 75% Indica / 25% Sativa |
| Flowering time | ~8 weeks | ~9 weeks | ~7 weeks |
| Indoor yield | Up to 500g/m² | Up to 450g/m² | Up to 475g/m² |
| Dominant flavour | Sweet, fruity, earthy | Earthy, piney, spicy | Citrus, earthy, sweet |
| Plant height | 60–100 cm | 80–120 cm | 50–90 cm |
| Best for | Flavour chasers, balanced effect | Heavy indica fans, stealth grows | Speed runs, SOG setups |
Green Poison Auto sits in a sweet spot: faster than Northern Lights Auto, more flavour complexity than Critical Auto, and a yield that competes with both. If you want the heaviest possible body stone, Northern Lights wins. If you want to harvest as fast as physically possible, Critical Auto shaves off a week. But for the best balance of speed, taste, and potency, Green Poison Auto is the one we'd pick.
We've been selling cannabis seeds since the early days of the shop, and Green Poison Auto has been a consistent favourite for a reason — it's genuinely hard to mess up. The ruderalis genetics give it a resilience that forgives overwatering, slightly off pH, and the kind of temperature swings you get in an uninsulated attic grow. That said, it's not invincible. Overfeeding in the first two weeks is the most common mistake we see — autos are smaller plants with smaller root systems, and they don't need the same nutrient load as a photoperiod monster in a 30-litre pot.
The smell during late flower is properly loud. We get messages from growers who underestimated how much terpene production ramps up in weeks 6–8. If you're growing indoors without a carbon filter, your entire flat will smell like a fruit market by harvest day. Plan accordingly.
One thing that surprises people: the 30% sativa influence is noticeable. This isn't a pure couch-lock strain. The initial effect has a creative, slightly uplifting edge before the indica body relaxation settles in. It's a nice balance — functional enough for an evening with friends, heavy enough to wind down before bed.
Under optimal conditions, Green Poison Auto reaches 60–100 cm by harvest. Indoors with strong lighting and LST, most plants settle around 70–80 cm. Outdoors in a sunny spot with good soil, you'll see the taller end of that range.
You can, but we wouldn't recommend it. Autoflowers have a fixed vegetative period, so they don't have time to recover from high-stress training the way photoperiod plants do. Low-stress training — gently bending and tying down branches — gives you better canopy coverage without the risk.
10–15 litres is the sweet spot. Smaller pots restrict root growth and cap your yield; bigger pots waste medium since the plant won't fill them in 8 weeks. Fabric pots with good drainage work particularly well for autos.
No — that's the beauty of autoflowers. An 18/6 or 20/4 light schedule from seed to harvest works well. Some growers run 24/0, but we've found 18–20 hours gives slightly better terpene development without sacrificing much yield.
Up to 150g per plant in a warm, sunny climate with good soil and regular feeding. In cooler northern European conditions, expect closer to 80–120g. The compact plant size means you can fit several in a small garden space to boost total harvest weight.
Sweet and fruity upfront — think ripe berries with a candy edge — followed by earthy, spicy, and pine notes. The myrcene-dominant terpene profile gives it a thick, almost syrupy quality on the exhale. Curing for at least two weeks brings out the full complexity.
Yes — it's one of the more forgiving autos we stock. The ruderalis genetics provide resilience against common beginner mistakes like inconsistent watering or imperfect pH. Just go easy on nutrients in the first fortnight and you'll be fine.
Last updated: April 2026
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.
