Blue Bullet
Cannabis seeds
by Sensi Seeds
Blue Bullet Automatic Cannabis Seeds by Sensi Seeds
Blue Bullet Automatic is a fast-finishing autoflowering cannabis seed from Sensi Seeds that races from seed to harvest in just 8–9 weeks. Bred from Blueberry and Skunk #1, this compact sativa-dominant hybrid delivers berry-sweet, citrus-skunky buds on a plant small enough to tuck into a balcony corner. Originally trialled as "Sensi #119" during the 2019 Sensi Research project, the community renamed it to match its speed and Blueberry lineage.
Choose Your Pack Size
Blue Bullet Automatic seeds come in two pack sizes. The 3-seed pack is a solid choice if you want to run a single cycle and see how she performs in your setup. The 5-seed pack gives you room for selection — pick the strongest seedlings and still have spares if germination throws you a curveball. We'd go with the 5-pack every time; having extras means you're never stuck waiting on a resupply mid-season.
| Pack | Seeds | SKU | Best For |
|---|---|---|---|
| 3-seed pack | 3 | CSSE0078 | Single-cycle test run |
| 5-seed pack | 5 | CSSE0095 | Full grow with selection room |
Blue Bullet Automatic Specifications
Here's what Sensi Seeds puts on the tin — and from what we've seen, the numbers hold up.
| Specification | Detail |
|---|---|
| Seed Bank | Sensi Seeds |
| Genetics | Blueberry x Skunk #1 |
| Type | Autoflowering Feminised |
| Dominance | Sativa-dominant (indica-sativa hybrid) |
| Seed to Harvest | 8–9 weeks |
| THC Level | Moderate |
| Plant Height | Compact / short stature |
| Yield | Large for her size |
| Climate Tolerance | Adapts to varied climates and environments |
| Aroma | Sweet berry, skunky, citrus |
| Flavour | Prominent berry note, citrus aftertaste |
| Origin Project | Sensi Research 2019 (originally "Sensi #119") |
Running Blue Bullet Automatic indoors? Pair her compact frame with a Dark Box grow tent — the 80x80 fits 2–4 autos without wasting space. And if you haven't sorted your medium yet, a coco coir and perlite mix gives autoflowers the drainage and aeration they love.
Why Blue Bullet Automatic Seeds Deserve a Spot in Your Grow
Speed is the obvious headline. Eight to nine weeks from popping the seed to chopping the plant — that's about as fast as autoflowers get. But plenty of fast strains sacrifice flavour or yield for that clock speed, and that's where Blue Bullet stands apart. The Blueberry parentage gives her a genuine berry sweetness that you can smell before you even break the buds open. The Skunk #1 backbone adds structure, vigour, and that unmistakable skunky punch underneath the fruit. It's not a one-note terp profile; there's a citrus tang on the exhale that rounds the whole thing out.
Size is the other selling point. She stays short and bushy — proper discreet. If you're growing on a balcony, in a small tent, or anywhere space is tight, Blue Bullet won't stretch into your lights or tower over the fence. Despite that compact frame, the yields are genuinely impressive relative to her stature. Sensi Seeds bred this one to punch above her weight, and the tight, dense flower structure backs that up. The buds are small but packed — not airy popcorn nugs.
The one honest watch-out: moderate THC. If you're chasing the absolute highest potency autoflower on the market, this isn't it. What you get instead is an uplifting, relaxing effect that doesn't flatten you — the kind of smoke you can actually enjoy in the afternoon without writing off the rest of your day. We'd take that trade-off nine times out of ten. Compared to something like Sensi Seeds' Skunk #1 Automatic, Blue Bullet trades a bit of raw potency for a far more interesting flavour profile and a slightly quicker finish.
Aroma and Flavour: What Blue Bullet Automatic Buds Actually Taste Like
Crack a cured bud and the first thing that hits you is sweet berry — proper Blueberry genetics coming through, not some vague "fruity" marketing claim. Underneath that, there's a thick skunky base that fills the room. It's not subtle. If you're drying in a space without a carbon filter, your neighbours will know about it.
On the smoke or vape, the berry note sits front and centre. It's rich and mouth-watering, the kind of flavour that makes you pause and actually pay attention. Then the citrus comes in on the aftertaste — a clean, tangy finish that lifts the whole experience. The skunky undertone stays in the background, giving it depth without overpowering the fruit. It's a well-layered profile that genuinely reflects both parent strains. We've had customers come back specifically for the taste, which tells you something.
How to Grow Blue Bullet Automatic Seeds
- Germinate your Blue Bullet Automatic seeds using the paper towel method or directly in a small pot of moist, light soil or coco coir. Tap roots typically appear within 24–72 hours.
- Transplant seedlings into their final container early — autoflowers don't love being moved once established. An 11–15 litre pot is the sweet spot for balancing root space with her compact size.
- Provide 18–20 hours of light per day throughout the entire cycle. Autoflowers don't need a light schedule change to trigger flowering, so keep the lights on and let her do her thing.
- Keep feeding light during the first 2–3 weeks, then gradually increase nutrients as she enters pre-flower. She's robust, but overfeeding a small plant is the fastest way to lock out nutrients.
- Watch for the first pistils around week 3–4. From here, she'll stack on weight quickly. Support branches if the buds get heavy — even compact plants can droop under dense flowers.
- Flush with plain water for the final 7–10 days before harvest. This cleans up the flavour noticeably, especially with a terp-heavy strain like this one.
- Harvest at 8–9 weeks from seed. Check trichomes with a loupe — milky with a few amber is the window for that balanced, uplifting effect Sensi Seeds describes.
- Dry slowly in a dark room at 18–21°C with 55–60% humidity for 7–10 days, then cure in glass jars for at least 2 weeks. The berry and citrus notes develop significantly during a proper cure.
Frequently Asked Questions
How long does Blue Bullet Automatic take from seed to harvest?
Eight to nine weeks total. That's the full cycle — germination through to chop day. She's one of the fastest autoflowers in the Sensi Seeds catalogue, which makes her brilliant for growers who want quick turnarounds or multiple harvests per outdoor season.
Is Blue Bullet Automatic suitable for beginner growers?
Yes, she's one of the easiest autoflowers to grow. The compact size means less training and maintenance, the robust genetics handle temperature swings and minor feeding mistakes, and the short cycle means you're not babysitting for months. A genuinely good first seed.
What is the THC level of Blue Bullet Automatic?
Sensi Seeds describes the THC content as moderate. Don't expect competition-level potency — this strain leans into flavour and ease of growth rather than raw strength. The effect is uplifting and relaxing without being overwhelming.
Can I grow Blue Bullet Automatic outdoors?
Absolutely. She adapts well to varied climates and stays discreet thanks to her short stature. Outdoors, she'll finish in roughly the same 8–9 week window. Just make sure she gets plenty of direct sunlight — autoflowers thrive on long light hours.
What does Blue Bullet Automatic smell and taste like?
Sweet berry from the Blueberry parent, a thick skunky base from Skunk #1, and a citrus tang on the finish. The aroma is strong — plan for odour control if growing indoors. The flavour deepens considerably with a proper 2-week cure in glass jars.
How much yield can I expect from Blue Bullet Automatic?
Sensi Seeds notes that yields are large relative to the plant's compact size. You won't match a full-sized photoperiod monster, but for an autoflower this short, the dense bud structure delivers impressive returns. A 15-litre pot and strong lighting will maximise what she can produce.
What's the difference between Blue Bullet Automatic and Skunk #1 Automatic?
Both are Sensi Seeds autoflowers, but Blue Bullet adds Blueberry genetics into the mix. That gives her a sweeter, fruitier flavour profile and a slightly more complex aroma. Skunk #1 Auto is more straightforward skunky. Blue Bullet also finishes a touch faster at 8–9 weeks.
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.