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Kryptonite by Pyramid Seeds — feminized Kryptonite seeds of a sativa strain, with a germination guarantee. 20–23% THC from Yumbolt genetics: one of the fastest-flowering sativas in the world — 58 days under LED — with an intense sour-haze aroma, a cerebral psychedelic effect and up to 800–950 g/1.5 m².
Who is it for? Anyone after sativa power without the long wait — an intense head effect, euphoria and a psychedelic edge in the shortest flowering time. Discreet shipping to the UK, Europe, the USA, Canada and worldwide.
Kryptonite by Pyramid Seeds — feminized Kryptonite seeds of a sativa strain, with a germination guarantee. 20–23% THC, 80% sativa from the legendary Yumbolt line: bred in the Sierra de Granada, one of the fastest-flowering sativas in the world. Sour haze notes, an intense cerebral effect, euphoria and a psychedelic experience — in just 58 days under LED.
| Genetics | Yumbolt (Sierra de Granada selection) |
| Genotype | 80% sativa / 20% indica |
| Flowering type | Photoperiod, feminized |
| THC | 20–23% |
| CBD | Low |
| Flowering indoor (LED) | 58 days |
| Flowering indoor (HPS) | 65 days |
| Yield indoor | 450 g/m² | up to 800–950 g/1.5 m² (720 W LED) |
| Yield outdoor | 500 g – 1.5 kg/plant |
| Harvest outdoor | 1st–2nd week of September (northern hemisphere) |
| Dominant terpenes | limonene, caryophyllene, pinene, myrcene |
| Aroma | sour haze, citrus, pine, earthy, spicy |
| Effects | cerebral, euphoric, psychedelic, stimulating |
| Collection | European |
| Difficulty | Moderate |
Kryptonite is built on the Yumbolt line — a legendary sativa genetic selected and stabilised by breeders in the Sierra de Granada. Yumbolt is known for its distinctive sour-haze profile, a fast flowering time despite sativa dominance, and an intense cerebral effect.
What sets Kryptonite apart from other sativas: a 58-day flowering time under LED — exceptionally short for an 80% sativa. Typical sativas need 70–90 days. Kryptonite delivers the full sativa character in far less time — with no compromise on potency or aroma.
80% sativa — the effect is cerebral and stimulating to match:
The signature trait of Kryptonite: sour haze notes that gain a special depth through the Yumbolt cross — rounded out by citrus, fresh pine and spicy earth.
| Terpene | Typical impressions | Contribution to the profile |
|---|---|---|
| Limonene | Fresh, citrusy, sour | The main carrier of the haze sourness — mood-lift, euphoria |
| Caryophyllene | Spicy, peppery | Gives the sativa profile a spicy depth |
| Pinene | Fresh, pine-like, needle | The fresh pine component — promotes alertness |
| Myrcene | Earthy, slightly fruity | Earthy base — links sativa freshness with depth |
Flowering time 58 days under LED (HPS: 65 days). Yield: 450 g/m² standard, up to 800–950 g/1.5 m² with a 720 W LED. A medium-sized plant with long, dense, heavy flowers. Plan for some stretch in the flowering phase — control height with LST or SCROG.
Harvest in the 1st–2nd week of September (northern hemisphere) — very early for an 80% sativa. Up to 1.5 kg per plant under optimal conditions. Robust and adaptable.
| Kryptonite Fem | Kryptonite Fast | |
|---|---|---|
| Flowering (LED) | 58 days | 53 days |
| THC | 20–23% | 21–23% |
| Yield (LED) | 800–950 g/1.5 m² | 800–950 g/1.5 m² |
| Flowering type | Photoperiod | Fast-flowering, photo |
| Who is it for? | Classic cycle, full control | Fastest harvest, more cycles |
Every pack of Kryptonite seeds comes from the Pyramid Seeds breeding programme in Barcelona, where we have produced our own genetics since 2002 — no repackaged seeds from other producers. All orders include our germination guarantee and are shipped discreetly to the UK, across Europe, to the US and Canada and worldwide.
Browse more Pyramid Seeds genetics:
Kryptonite is a feminized 80% sativa by Pyramid Seeds, built on the Yumbolt genetics from the Sierra de Granada — with 20–23% THC, a 58-day flowering time under LED and an intense cerebral, psychedelic effect. One of the fastest-flowering sativas in the world.
Kryptonite by Pyramid Seeds is 80% sativa / 20% indica. The effect is predominantly cerebral and stimulating — euphoric, creative and psychedelic — with the small indica share adding a gentle physical relaxation.
Several different genetics are sold under the Kryptonite name, and strain databases do not always describe the same plant. Our Kryptonite is Pyramid Seeds' own Yumbolt-based selection from the Sierra de Granada: 80% sativa, sour-haze aroma, 58 days under LED. When comparing, look at the genetics and the sativa/indica ratio rather than the name alone.
The Yumbolt genetics were specifically selected for short flowering times with the full sativa character. 58 days under LED is exceptional for an 80% sativa — typical sativas need 70–90 days. Kryptonite delivers the full haze effect in far less time.
Sour haze notes as the signature, rounded out by citrus, fresh pine and spicy earth — carried by limonene, caryophyllene, pinene and myrcene.
Indoors 450 g/m² as standard, up to 800–950 g/1.5 m² with a 720 W LED. Outdoors 500 g to 1.5 kg per plant under optimal conditions.
Kryptonite Fast flowers even shorter — just 53 days under LED instead of 58. THC and yield are identical. Fast is ideal for several harvests a year or when maximum speed is the priority.
Yes — Auto Kryptonite flowers automatically in 63 days with no light schedule, ideal for beginners and for several harvests a year.
Yes. These Kryptonite seeds are feminized — “feminised” in British spelling — so practically every plant is a female that produces buds.
Pyramid Seeds sells cannabis seeds as collectible items, and the growing information on our site is for educational purposes only. Whether you may germinate seeds and grow plants depends on the law in your country, and the rules differ widely — please check the regulations that apply where you live before growing.
Pyramid Seeds — over 20 years of experience in cannabis breeding. Shipped direct from Barcelona, discreet and fast, worldwide.
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