Auto Anthrax
Cannabis seeds
by BSB Genetics
Auto Anthrax Cannabis Seeds by BSB Genetics
Auto Anthrax is a feminised autoflowering cannabis seed from BSB Genetics that delivers old-school indica genetics in a fast, uncomplicated package. Born from the cross of Auto Green Poison and Auto Big Devil #2 — then backcrossed to the original Green Poison clone for full flavour — this 79% indica auto finishes in just 8 weeks from seed and pulls up to 600g/m² under a 600W light. That's serious weight for an autoflower, and the resin production backs it up.
Why Auto Anthrax Seeds Stand Out
Most autoflowers ask you to compromise somewhere — yield, potency, flavour. Auto Anthrax doesn't really ask that. BSB Genetics didn't rush the breeding process. They ran three generations of hybrids before backcrossing to the original Green Poison mother, which is how they locked in that sweet, soothing aroma without losing the heavy indica effect. The result is a strain that smokes like a photoperiod classic but grows like an auto.
The resin production on this one is genuinely impressive. Buds come out sticky and dense, coated in trichomes that catch the light. If you've grown Auto Green Poison before, imagine that frost level dialled up a notch with a broader, more complex terpene profile underneath. The indica dominance (79%) means compact growth, tight internodes, and a plant that doesn't stretch out of control — staying between 70 and 120cm indoors.
We'd pick Auto Anthrax over most budget autos in the same price bracket. The genetics are more refined, the yields are above average, and the flavour actually delivers. If you want a comparable alternative with a slightly different terpene profile, look at Auto Green Poison on its own — but you'll sacrifice some of the depth that the Big Devil #2 parentage brings to this cross.
Auto Anthrax Grow Specifications
| Specification | Detail |
|---|---|
| Seed Bank | BSB Genetics |
| Seed Type | Feminised Autoflower |
| Genetics | Auto Green Poison x Auto Big Devil #2 (backcrossed to Green Poison) |
| Indica / Sativa | 79% Indica / 21% Sativa |
| Seed to Harvest | Approximately 8 weeks |
| Indoor Height | 70–120cm |
| Indoor Yield | 550–600g/m² (under 600W) |
| Growing Difficulty | Easy — suitable for less experienced growers |
| Seeds per Pack | 5 |
Taste, Aroma, and What to Expect from Auto Anthrax
The first thing you notice when you open a cured jar of Auto Anthrax is the sweetness. It's not a candy-shop sweetness — more like ripe stone fruit with a mild skunk backbone sitting underneath. The smoke itself is smooth and soothing, with that sweet top note carrying through on the inhale and a slightly earthy, resinous finish on the exhale. If you've smoked proper old-school indica before, you'll recognise the profile immediately.
The effect is classic indica: heavy, ultra-relaxing, and physical. This isn't a strain for getting things done. It's the one you roll after everything's already done. The potency is genuinely strong — BSB Genetics bred this for resin production and it shows. Expect a deep body relaxation that settles in quickly and sticks around.
One honest limitation: because this strain is so indica-dominant and compact, humidity management matters during late flower. Those dense buds can trap moisture if your airflow isn't sorted. A small oscillating fan pointed at the canopy and decent extraction will keep you out of trouble. Don't skip this step — we've seen growers lose beautiful colas to bud rot in the final week because they got lazy with ventilation.
How to Grow Auto Anthrax Seeds
- Germinate your Auto Anthrax seeds using the paper towel method or directly in a small pot of moist, light soil. Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their final container early — 11–15 litre fabric pots work well. Autoflowers don't love being repotted mid-grow, so get them into their final home within the first week.
- Run your lights on an 18/6 or 20/4 schedule from seed to harvest. As an autoflower, Auto Anthrax doesn't need a light cycle change to trigger flowering — she'll flip on her own around week 3–4.
- Keep feeding light during veg and ramp up bloom nutrients once you see the first pistils. This strain responds well to a standard autoflower feeding schedule — don't overdo the nitrogen once flowering starts.
- Monitor humidity closely from week 5 onwards. Those dense, resinous buds need good airflow. Keep relative humidity below 50% during late flower to avoid mould issues.
- Harvest around week 8 from seed. Check trichomes with a loupe — mostly cloudy with a few amber heads is the sweet spot for that heavy indica effect.
Auto Anthrax Yield and Performance
Auto Anthrax produces 550–600g/m² indoors under a 600W light — a figure that puts it comfortably in the top tier for autoflowering strains. For context, most autos in this genetic bracket sit around 400–500g/m², so you're looking at a genuine 20–30% yield advantage. The compact 70–120cm height means you can fit more plants per square metre in a SOG setup without them competing for light.
Outdoors and in greenhouses, she performs just as reliably. The autoflowering genetics mean no light schedule dependency, so you can run multiple cycles per season in warmer climates or get a single solid harvest in northern European summers. The 8-week seed-to-harvest timeline is genuinely fast — some growers report finishing even a few days earlier depending on phenotype.
| Growing Environment | Expected Performance |
|---|---|
| Indoor (600W) | 550–600g/m², 70–120cm height, 8 weeks |
| Greenhouse | Strong yields, no light dep needed |
| Outdoor | Multiple cycles possible in warm climates |
| SOG Setup | Compact growth suits high-density planting |
Complete your Auto Anthrax grow with a proper setup. A grow tent in the 80x80cm range gives this compact strain room to breathe while keeping your environment controlled. Pair it with fabric pots for better root aeration — autoflowers thrive when the root zone stays oxygenated. And if you're growing indoors, a carbon filter is non-negotiable once those resinous buds start throwing off their sweet, skunky aroma around week 5.
Frequently Asked Questions
How long does Auto Anthrax take from seed to harvest?
About 8 weeks from germination to chop. Some phenotypes finish a few days earlier. Check trichome colour with a jeweller's loupe rather than counting days — cloudy with some amber is your target for the full indica effect.
What yield can I expect from Auto Anthrax indoors?
BSB Genetics rates it at 550–600g/m² under a 600W grow light. That's above average for an autoflower. Actual results depend on your setup, but even less experienced growers should clear 400g/m² without much trouble.
Is Auto Anthrax suitable for beginner growers?
Yes. She's uncomplicated, doesn't need light schedule changes, stays compact, and finishes fast. The main thing to watch is humidity during late flower — those dense buds need airflow. Sort your ventilation and you'll be fine.
How tall does Auto Anthrax grow indoors?
Between 70 and 120cm, depending on pot size and light intensity. The 79% indica genetics keep her stocky with tight internodes. She fits comfortably in tents as small as 60x60cm, though an 80x80 gives better results.
What does Auto Anthrax taste like?
Sweet and soothing with a ripe fruit character on the inhale and an earthy, mildly skunky finish. The backcross to the original Green Poison clone is what gives her that depth — it's not a one-note flavour. Think old-school indica with a modern aromatic twist.
Can I grow Auto Anthrax outdoors?
Absolutely. As an autoflower, she doesn't depend on light cycles to flower. She'll perform in a greenhouse or under direct sun. The 8-week timeline means you can even squeeze in multiple runs per season in warmer regions.
What is the genetic background of Auto Anthrax?
She's a cross of Auto Green Poison and Auto Big Devil #2. BSB Genetics ran three generations of selection, then backcrossed the best hybrid to the original Green Poison clone to lock in the full aroma and flavour profile. The result is 79% indica, 21% sativa.
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.