Six Shooter Auto
Cannabis seeds
by Fast Buds
Six Shooter Auto Cannabis Seeds by FastBuds
Six Shooter Auto is a feminised autoflowering cannabis strain from FastBuds that crosses Crystal METH with Mexican Airlines to produce 21% THC plants reaching up to 140cm tall — making it one of the largest autoflowering varieties on the market. The full life cycle wraps up in roughly 9 weeks from germination, which is fast for a plant this size. If you want autoflower seeds that don't compromise on yield or potency, this is the one we'd point you towards.
Six Shooter Auto Seed Packs — Which Size?
Six Shooter Auto seeds come in packs of 3, 5, or 10. If you're running a single tent and want to pheno-hunt a little, the 5-pack gives you enough plants to find a standout without overcommitting. The 10-pack is the better deal per seed if you're planning a full canopy or want to run multiple cycles. The 3-pack works if you just want to test the genetics before scaling up.
| Pack Size | SKU | Best For |
|---|---|---|
| 3 seeds | CSFB0012 | Test run — try the genetics first |
| 5 seeds | CSFB0033 | Single tent, room to select the best pheno |
| 10 seeds | CSFB0034 | Full canopy or multiple cycles — best value per seed |
Why Six Shooter Auto Seeds Deserve Your Grow Space
We've sold a lot of autoflowering seeds over the years, and the complaint is almost always the same: too small, too light, not enough punch. Six Shooter Auto was bred specifically to fix that. FastBuds crossed Crystal METH — already known for ridiculous resin production — with Mexican Airlines, a sativa-leaning auto with energising, uplifting qualities and sharp citrus-spice aromatics. The result is a strain that grows like a photoperiod but finishes on an autoflower schedule.
At 100–140cm, this plant towers over most autos. FastBuds themselves call it their biggest autoflowering variety, and some growers classify it as a "super auto" because of the sheer size and branching structure. The colas stack heavy, the side branches fill out properly, and the bud-to-leaf ratio is genuinely good — trimming this one is closer to pleasant than painful. That's not something we say about many strains.
The one thing to watch: because Six Shooter Auto gets tall, indoor growers need headroom. If you're working in a 120cm tent, you'll want to manage height early. Low-stress training works well here — the branches are flexible enough to tie down without snapping, and the strong lateral growth responds nicely to an open canopy. Outdoors, this plant really stretches its legs. Give it decent soil, full sun, and step back.
Six Shooter Auto Specifications
| Specification | Detail |
|---|---|
| Seed Bank | FastBuds (USA) |
| Genetics | Crystal METH x Mexican Airlines |
| Seed Type | Feminised Autoflowering |
| THC | 21% |
| Life Cycle | Approximately 9 weeks from germination |
| Indoor Flowering | Approximately 10 weeks |
| Plant Height | 100–140cm |
| Indoor Yield | 500–750g/m² |
| Outdoor Yield | 80–350g per plant |
| Aroma | Citrus, spicy |
| Reported Effects | Energising, creative |
| Grow Difficulty | Intermediate |
| Available Packs | 3, 5, or 10 seeds |
Running Six Shooter Auto indoors? A proper grow tent makes all the difference — pair these seeds with a Dark Box tent and a complete ventilation setup. For outdoor grows, a quality soil mix and root-boosting mycorrhizae will help this strain hit its full 350g potential. If you're new to autoflowers, grab a propagation kit to give your seedlings the best start.
Growing Six Shooter Auto — What to Expect
Six Shooter Auto is rated intermediate difficulty, and that's fair. It's not a tricky plant, but it rewards growers who pay attention. The strong branching means you'll get good results even without training, but a bit of LST during weeks 2–4 opens up the canopy and lets light reach the lower bud sites — which on this strain actually develop into something worth keeping.
The citrus and spice aromas come through strongly during the last few weeks of flowering. You'll smell it before you see the trichomes frost over. The Crystal METH parentage shows up here: the resin production is heavy, coating not just the buds but the surrounding sugar leaves. If you're into extracts or hash-making, the trim from Six Shooter Auto is worth saving.
One honest limitation: the 80–350g outdoor yield range is wide. That lower end — 80g — happens when conditions aren't great: poor soil, limited sunlight, short growing season. In a warm Mediterranean or continental European summer with decent soil, you're looking at the upper half of that range. Indoor growers with optimised setups (good lights, proper feeding schedule, adequate pot size) can push towards the 750g/m² ceiling, but 500–600g/m² is more realistic for a standard setup.
How to Grow Six Shooter Auto Seeds
- Germinate your Six Shooter Auto seeds using the paper towel method or directly in a small pot of moist, light soil mix. Taproots typically emerge within 24–72 hours.
- Plant the germinated seed 1–2cm deep in its final container. Autoflowers don't like transplanting — start in the pot you intend to finish in. A 15–20 litre fabric pot works well for this strain's size.
- Provide 18–20 hours of light per day throughout the entire life cycle. Six Shooter Auto doesn't need a light schedule change to trigger flowering — it handles that on its own.
- Begin low-stress training around week 2–3, gently bending the main stem to open the canopy. The strong lateral branches will fill the space. Avoid topping unless you're experienced with autos — the tight schedule doesn't leave much recovery time.
- Feed lightly during the first 2 weeks, then increase nutrients as the plant enters its rapid growth phase. Switch to bloom nutrients once you see the first pistils, typically around week 4–5.
- Monitor humidity closely during late flowering. The dense colas can trap moisture, and you don't want mould this close to harvest. Keep relative humidity below 50% in the final weeks.
- Harvest around week 9 from germination. Check trichomes with a loupe — mostly milky with a few amber is the sweet spot for this strain's energising, creative profile.
Six Shooter Auto vs Other FastBuds Strains
FastBuds has built a solid catalogue of autoflowering genetics, so how does Six Shooter Auto compare? It's their tallest variety at 100–140cm, which immediately sets it apart from more compact options. The 21% THC puts it at the higher end of their range — not every FastBuds auto cracks 20%. The citrus-spice terpene profile is distinct from their fruitier strains, and the Crystal METH x Mexican Airlines lineage gives it a character that leans more energising than sedating.
If you're after something smaller for a tight space, Six Shooter Auto probably isn't your best pick — look at FastBuds' more compact varieties. But if you've got the headroom and want an autoflower that produces like a photoperiod, this is the one we'd choose. The yield potential of 500–750g/m² indoors is genuinely impressive for a 9-week seed-to-harvest cycle.
Aroma and Flavour Profile of Six Shooter Auto
The terpene profile on Six Shooter Auto leans citrus and spice — think sharp lemon zest with a peppery, almost herbal undertone. The Mexican Airlines genetics bring that bright, zesty top note, while Crystal METH adds depth and a resinous, almost fuel-like base. It's not a one-dimensional smell. When you crack open a cured bud, the spice hits first, then the citrus opens up as you break it apart. The flavour follows the nose closely, which isn't always the case with autos — some lose their terp complexity during the fast flowering cycle, but Six Shooter Auto holds onto it.
Frequently Asked Questions
How long does Six Shooter Auto take from seed to harvest?
Roughly 9 weeks from germination to harvest. That's the full life cycle — no separate veg and flower periods to manage. Some phenotypes may run a few days longer, but you're looking at a fast turnaround for a plant this size.
Is Six Shooter Auto suitable for beginners?
It's rated intermediate. The plant is forgiving in terms of feeding, but its size (100–140cm) means you need to manage height indoors. If you've grown one or two autos before, you'll handle this fine. Complete first-timers might want to start with something more compact.
What yields can I expect from Six Shooter Auto indoors?
FastBuds lists 500–750g/m² for optimised indoor setups. Realistically, 500–600g/m² is achievable with decent lights and proper feeding. Hitting 750g/m² requires dialled-in environmental control and training techniques.
Does Six Shooter Auto need a specific light cycle?
No. As an autoflowering strain, it flowers regardless of light schedule. Most growers run 18/6 or 20/4 throughout the entire cycle. There's no need to switch to 12/12 — the Ruderalis genetics handle the transition automatically.
Can I grow Six Shooter Auto outdoors?
Absolutely — FastBuds designed this strain with outdoor growers in mind. Expect 80–350g per plant depending on climate, soil quality, and sunlight hours. It thrives in warm conditions but the autoflowering genetics mean it finishes before autumn weather becomes a problem in most European climates.
What does Six Shooter Auto smell like?
Citrus and spice dominate. Sharp lemon zest on top, peppery and herbal underneath. The Crystal METH parentage adds a resinous depth. The aroma gets strong in the final weeks of flowering — a carbon filter is a good idea for indoor grows.
Is 21% THC high for an autoflowering strain?
Yes, significantly. Early autoflowers like Lowryder rarely broke 15%. At 21%, Six Shooter Auto sits well above average for autos and competes with many photoperiod strains. The Crystal METH x Mexican Airlines genetics are responsible for pushing that number up.
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.