Auto Kryptonite
Cannabis seeds
by Pyramid Seeds
Auto Kryptonite Cannabis Seeds by Pyramid Seeds
Auto Kryptonite is an autoflowering sativa-dominant cannabis seed from Pyramid Seeds that delivers a full Haze flavour profile in a remarkably short 65-day flowering cycle. Born from a cross between sun-grown Granada mountain phenotypes and the legendary Yumbolt, this strain packs 17% THC into dense, compact buds — without asking much from the grower. If you want sativa speed and sativa taste without sativa drama, this is the seed to drop.
Why Auto Kryptonite Seeds Deserve a Spot in Your Grow
Auto Kryptonite seeds solve the classic sativa grower's dilemma: you want that cerebral, energetic effect and that unmistakable Haze taste, but you don't want to babysit a lanky plant for 12+ weeks of flowering. Pyramid Seeds crossed carefully selected mountain-grown phenotypes from Granada — plants that have adapted to intense sun and altitude — with Yumbolt, a Californian classic known for heavy resin production and structural sturdiness. The result is a plant that stays between 60 and 160cm tall, finishes flowering in roughly 65 days from seed, and still fills out with seriously chunky, resinous buds.
We've seen growers overlook autoflowers because they assume the yields can't compete. Auto Kryptonite pushes back on that assumption hard. Indoors under a 20-hour light schedule, she can produce up to 550g/m². Outdoors, expect around 100g per plant when conditions line up. For an autoflower — let alone a sativa-leaning one — those numbers are genuinely impressive.
The honest limitation? She's not going to give you the towering, Christmas-tree stature of a photoperiod sativa. If you're growing for visual spectacle, she's modest. But what she lacks in height she makes up for in bud density and speed. We'd pick Auto Kryptonite over most photoperiod sativas for a quick turnaround grow any day of the week.
Auto Kryptonite Grow Specs and Seed Specifications
| Specification | Detail |
|---|---|
| Seed Bank | Pyramid Seeds |
| Genetics | Granada mountain phenotypes x Yumbolt |
| Type | Autoflowering, feminised |
| Dominant Profile | Sativa |
| THC Content | 17% |
| Flowering Time | Approximately 65 days from seed |
| Height | 60–160cm |
| Indoor Yield | Up to 550g/m² |
| Outdoor Yield | Up to 100g per plant |
| Light Schedule | 20 hours on / 4 hours off (recommended) |
| Seeds per Pack | 5 |
| SKU | CSPY0034 |
Flavour, Aroma, and What to Expect from Auto Kryptonite
Auto Kryptonite delivers a classic Haze flavour — that slightly sweet, spicy, almost incense-like taste that sativa lovers chase. On the inhale you get a smooth, herbal warmth; on the exhale, a lingering earthy sweetness that sits on the palate. The aroma during the final weeks of flowering is noticeable too — expect that sharp, resinous Haze funk filling your grow space. If you're running without a carbon filter, your neighbours will have opinions.
At 17% THC, the smoke is potent without being overwhelming. Pyramid Seeds describes the effect as cerebral and energetic with a relaxing undertone — what you'd expect from a well-bred sativa. It's a daytime smoke, the kind that pairs with a walk through Vondelpark rather than melting into the sofa. The onset is clear-headed and the duration is long-lasting, which is a nice bonus given how quickly the plant itself finishes growing.
How to Grow Auto Kryptonite Seeds
- Germinate your Auto Kryptonite seeds using the paper towel method or directly in a small pot of moist, airy soil. Taproots typically appear within 24–72 hours.
- Transplant seedlings into their final container early — autoflowers don't love being repotted. A 10–15 litre fabric pot with well-draining soil works well.
- Set your indoor lights to a 20/4 schedule (20 hours on, 4 hours off). Auto Kryptonite doesn't need a light cycle change to trigger flowering — she'll do that on her own.
- Keep nutrients light during the seedling stage. Once she enters vegetative growth, introduce a balanced feed. Switch to bloom nutrients when you see the first pistils forming, usually around week 3–4.
- Monitor humidity: aim for 60–70% during veg and drop to 40–50% during flowering to prevent mould on those dense buds.
- Auto Kryptonite responds well to low-stress training (LST). Gently bend and tie down the main stem to expose lower bud sites to light. Avoid heavy topping — autoflowers have limited recovery time.
- Harvest when trichomes are mostly milky with a few turning amber. With a 65-day total cycle, you could be trimming by day 70 at the latest.
Auto Kryptonite vs Other Autoflowering Sativas
The autoflower sativa category has grown massively over the past few years, so where does Auto Kryptonite sit? Here's a quick comparison with two other popular options.
| Feature | Auto Kryptonite (Pyramid Seeds) | Auto Amnesia Haze | Auto Lemon Haze |
|---|---|---|---|
| Flowering Time | ~65 days total | ~80–85 days total | ~75–80 days total |
| THC | 17% | 18–21% | 15–17% |
| Indoor Yield | Up to 550g/m² | Up to 500g/m² | Up to 450g/m² |
| Height | 60–160cm | 80–150cm | 70–120cm |
| Flavour | Classic Haze, earthy-sweet | Haze, citrus | Lemon, Haze |
| Best For | Speed + yield balance | Maximum potency | Flavour chasers |
Auto Kryptonite wins on speed — 65 days is genuinely fast for a sativa auto. Auto Amnesia Haze edges it on raw THC percentage, but you're waiting an extra 2–3 weeks for that. If you're running multiple cycles per year or working with limited grow time, Auto Kryptonite is the smarter pick.
Complete your setup with a proper grow tent and ventilation kit. If you're running Auto Kryptonite indoors, pair her with a reliable LED panel and a carbon filter — those Haze terps get loud in the final weeks. A set of fabric pots and some quality soil will round out everything you need for a successful autoflower run.
Frequently Asked Questions
Is Auto Kryptonite a sativa or indica?
Auto Kryptonite is sativa-dominant. Pyramid Seeds bred her from Granada mountain phenotypes crossed with Yumbolt, resulting in a sativa-leaning autoflower with cerebral, energetic effects and a classic Haze flavour profile.
How long does Auto Kryptonite take from seed to harvest?
Approximately 65 days from germination to harvest. That makes her one of the fastest sativa autoflowers available — most sativa autos take 75–85 days to finish.
What yield can I expect from Auto Kryptonite indoors?
Under a 20/4 light schedule with proper nutrition, Auto Kryptonite can produce up to 550g/m² indoors. Outdoors, expect around 100g per plant in good conditions.
Does Auto Kryptonite need a change in light cycle to flower?
No. As an autoflower, Auto Kryptonite begins flowering automatically regardless of light schedule. Pyramid Seeds recommends running 20 hours of light and 4 hours of darkness throughout the entire cycle for maximum yield.
How tall does Auto Kryptonite grow?
She ranges between 60cm and 160cm depending on growing conditions, pot size, and light intensity. Use low-stress training to manage height if you're working in a smaller tent or limited vertical space.
What does Auto Kryptonite taste like?
Classic Haze — a smooth, slightly sweet and spicy herbal flavour with an earthy undertone on the exhale. If you enjoy traditional sativa taste profiles, Auto Kryptonite delivers exactly that.
Can I top Auto Kryptonite?
You can, but we'd recommend low-stress training (LST) instead. Autoflowers have a fixed vegetative period, so heavy topping can stunt growth. LST gives you canopy control without the recovery time penalty.
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.