Auto-Bomb Autoflowering

Auto-Bomb Autoflowering Cannabis Seeds by Greenhouse Seeds

Auto-Bomb Autoflowering is a cold-tolerant autoflowering cannabis seed bred from seven parent strains, designed to finish flowering in just 7 weeks regardless of light schedule. Greenhouse Seeds created this one by crossing Green-O-Matic with Big Bang Autoflowering — packing Indica-dominant genetics into a compact plant that maxes out at 120cm. If you're growing in northern Europe and need something that won't bail on you when temperatures dip, this is the strain to reach for.

Auto-Bomb Autoflowering Genetics and Lineage

The family tree behind Auto-Bomb Autoflowering is more complex than the name suggests. Greenhouse Seeds crossed two autoflowering varieties — Green-O-Matic and Big Bang Autoflowering — but dig one generation deeper and you find seven distinct strains in the mix.

On the Green-O-Matic side: Ruderalis, Moroccan, White Dwarf, and Low Ryder. These contribute the autoflowering trait, cold hardiness, and compact stature. On the Big Bang Autoflowering side: Skunk, Northern Light, El Niño, and Ruderalis again. That's where the resin production, dense bud structure, and strong Indica influence come from. The double dose of Ruderalis genetics is what makes this plant so stubborn about flowering — it'll push through regardless of photoperiod, which is exactly what you want from an autoflower.

The Indica dominance is obvious in the final product. Buds are densely packed, heavily frosted with resin, and the plant stays short and bushy rather than stretching. If you've grown Northern Light or Skunk before, you'll recognise the structure.

Auto-Bomb Autoflowering Specifications

Why Auto-Bomb Autoflowering Seeds Are Worth Growing

We've sold cannabis seeds since the early days, and the question we get asked most by growers in the UK, Scandinavia, and the Benelux is always the same: what can I actually grow outdoors without losing everything to a cold snap in September? Auto-Bomb Autoflowering is one of the most honest answers to that question. The minimum temperature threshold of 10°C is genuinely low for a cannabis plant — most photoperiod strains start struggling well above that.

The 7-week flowering time is the other standout figure here. That's fast, even by autoflowering standards. Combined with the fact that autoflowers don't need a specific light schedule to trigger flowering, you can plant Auto-Bomb outdoors in late spring and harvest before autumn properly sets in. Indoors, you skip the hassle of light timers entirely — no need for a light-tight tent, no risk of accidental light leaks causing stress or hermaphroditism. The plant just does its thing on its own clock.

The honest limitation? Outdoor yield. At roughly 50g per plant outdoors, you're not going to fill jars from a single specimen. That's the trade-off for cold resistance and speed. Indoors under proper lighting, though, 450-500g/m² is a strong return — especially from a plant that tops out at 120cm. The compact height makes Auto-Bomb one of the best autoflowering strains for SOG and ScrOG setups where vertical space is limited. We'd pick this over taller autos if your grow space has a low ceiling or you're working in a converted cupboard.

How to Grow Auto-Bomb Autoflowering Seeds

1. Germinate your Auto-Bomb Autoflowering seeds using the paper towel method or by placing them directly into moist soil or coco coir. Keep the temperature around 20-25°C during germination. Taproots typically appear within 24-72 hours.
2. Plant the germinated seed about 1cm deep in its final container. Autoflowers don't respond well to transplanting — their short life cycle means any root stress costs you yield. Use the pot you intend to finish in, ideally 7-11 litres for indoor grows.
3. Provide 18-20 hours of light per day indoors. Auto-Bomb doesn't need a 12/12 flip to flower — it transitions automatically based on age, usually around week 3-4 from germination. Outdoors, plant after the last frost when daytime temperatures consistently stay above 10°C.
4. Feed lightly during the vegetative phase and increase nutrients as flower clusters develop. The dense, resin-heavy buds respond well to phosphorus and potassium during weeks 4-7. Don't overwater — the compact root system in a smaller pot saturates quickly.
5. Watch for the trichomes to shift from clear to milky white around week 7 of flowering. The buds should be large, densely packed, and visibly coated in resin. Harvest when roughly 70-80% of trichomes are milky for the strongest Indica-style effect.
6. Dry harvested buds in a dark, well-ventilated space at 18-22°C and 45-55% humidity for 7-10 days. Cure in sealed glass jars for at least 2 weeks, burping daily for the first few days. The smell is earthy and skunky — a carbon filter during the grow phase is not optional if discretion matters.