Auto Xtreme

Auto Xtreme Feminized Cannabis Seeds by Dutch Passion

Auto Xtreme is a feminized autoflowering cannabis seed that delivers serious sativa-dominant yields without demanding serious growing experience. Born from a two-year collaboration between Dutch Passion and Dinafem Seeds, this strain traces its genetics back to OutLaw — a cross of Amnesia and Super Haze — then refined into an autoflowering format that finishes in about 12 weeks. Available in packs of 3 seeds.

Why Auto Xtreme Seeds Stand Out

Auto Xtreme feminized seeds are the result of something you don't see every day in the seed world: two competing seed banks pooling their best genetics and spending two full years on selection and stabilisation. Dutch Passion brought their autoflower breeding programme; Dinafem Seeds contributed the OutLaw mother — an Amnesia x Super Haze cross known for vigorous growth and resin-heavy buds. The result landed in 2013 and it's stuck around for good reason.

What makes this one different from most autoflowers is the size. Where a typical auto might top out around 80-100cm, Auto Xtreme regularly reaches 150cm in height. That extra stature translates directly into yield — she develops large, resinous buds across multiple branches rather than concentrating everything into one modest cola. The cured flower tests at up to 15% THC, which puts it in a comfortable middle ground: strong enough to impress, not so overpowering that newer growers get caught out.

The honest limitation? That 12-week cycle is on the longer side for an autoflower. If you're after a quick turnaround — say, 8 weeks from seed — this isn't your strain. But if you can spare those extra few weeks, the yield-to-effort ratio is genuinely hard to beat in the auto category. We'd pick Auto Xtreme over most compact autos if space and time aren't tight.

Auto Xtreme Cannabis Seed Specifications

Auto Xtreme Grow Characteristics and Yield

Auto Xtreme feminized seeds produce strong, robust plants with a clear sativa-dominant growth pattern — tall, branchy, and eager to fill out laterally if given the room. At 150cm average height, she's one of the taller autoflowers on the market, which means indoor growers need to plan their vertical space. A grow tent under 120cm tall won't cut it here. If you're running an 80x80 or larger tent with at least 150cm of usable height, you're in good shape.

The yield is where Auto Xtreme really earns its name. Dutch Passion describe it as "more than generous," and from what we've seen, that's not marketing fluff. The combination of Amnesia and Super Haze genetics gives this plant a natural tendency to produce dense, resin-coated buds across multiple bud sites. The Haze heritage comes through in the bud structure — slightly looser than a pure indica, but absolutely caked in trichomes.

Because she's autoflowering and feminized, there's no need to worry about light cycle changes or identifying male plants. She'll flip to flower on her own internal clock, typically around weeks 4-5, then spend the remaining 7-8 weeks stacking on weight. The 12-week total cycle from seed to harvest is longer than many autos, but the trade-off is a plant that behaves more like a photoperiod in terms of size and output.

How to Grow Auto Xtreme Seeds

1. Germinate your Auto Xtreme seeds using the paper towel method or directly in a small pot of moist, light soil mix. Taproots typically emerge within 24-72 hours.
2. Plant the germinated seed about 1cm deep in its final container. Autoflowers don't love transplanting, so start in the pot you plan to finish in — 11-15 litres works well for a plant this size.
3. Provide 18-20 hours of light per day throughout the entire cycle. Auto Xtreme doesn't need a light schedule change to trigger flowering, but she does respond well to long light hours for maximum photosynthesis.
4. Keep temperatures between 20-28°C and relative humidity around 50-60% during vegetative growth, dropping to 40-50% during flowering to reduce mould risk on those dense buds.
5. Feed lightly during the first 2-3 weeks, then gradually increase nutrients as the plant enters its rapid growth phase. Switch to bloom nutrients once you see the first pistils forming, usually around week 4-5.
6. Watch your vertical space. At 150cm, Auto Xtreme can outgrow smaller setups. If height becomes an issue, gentle LST (low-stress training) in the early weeks helps keep the canopy even without stressing the plant.
7. Harvest when approximately 70-80% of trichomes have turned milky white with a few amber ones appearing. This typically falls around week 11-12 from seed. Dry in a dark, well-ventilated space at 18-22°C for 7-10 days, then cure in glass jars for at least 2 weeks.

Aroma, Flavour, and Resin Profile

The Amnesia and Super Haze parentage comes through clearly in the nose. Expect a sharp, slightly citrusy Haze aroma during the final weeks of flowering — the kind that fills a room and reminds you why carbon filters exist. Once cured, the buds carry a complex, slightly spicy-sweet scent with that unmistakable hazy undertone. Break a bud open and you'll notice the stickiness immediately; the resin production on Auto Xtreme is genuinely impressive for an autoflower.

With up to 15% THC, the potency sits in a range that most growers find versatile. It's strong enough to be satisfying, but not so intense that it overwhelms. The sativa dominance from the Haze genetics means the overall character leans towards uplifting and cerebral rather than heavy and sedative — though individual results depend on phenotype, growing conditions, and harvest timing.

Auto Xtreme Compared to Similar Autoflower Seeds

Auto Xtreme sits at the top end of the autoflower size spectrum. If you want something smaller and faster, a compact indica auto will finish in 8-9 weeks and stay under a metre. But if yield and sativa character matter more than speed, Auto Xtreme is hard to argue with.