Y Griega

Y Griega Feminised Seeds — Amnesia Meets Kali Mist at 27% THC

Y Griega is a Sativa-dominant feminised cannabis seed from Medical Seeds that crosses Amnesia with Kali Mist into an 80/20 Sativa-Indica hybrid tested at up to 27% THC. That's two of the most respected Haze lines in a single seed — and the result is a tall, vigorous plant that produces oversized, resin-drenched buds with a sharp, unmistakable Haze aroma. If you've grown Amnesia before and wanted more structure, or grown Kali Mist and wanted more punch, Y Griega sits right in the middle.

What Makes Y Griega Feminised Seeds Stand Out

Most Haze crosses compromise somewhere — they either stretch too much and yield wispy buds, or they've been Indica'd down so far the Sativa character is just a memory. Y Griega doesn't make that trade. According to a classification study published in PMC, Y Griega is typed as an 80% Sativa composed from the cross between Amnesia Haze and Kali Mist (PMC8948958, 2022). That Sativa dominance is real, and you can see it in how the plant grows: tall internodes, long fingers on the fan leaves, and a flowering stretch that demands vertical space or proper training.

The 27% THC ceiling is worth talking about. That's lab-tested potential, not marketing fluff. Not every phenotype will hit 27%, but even at the lower end of the range you're looking at a genuinely potent cultivar. The effect character leans into an energetic onset that settles into relaxed alertness — proper cerebral Sativa territory, not the kind of stone that pins you to the sofa.

One honest limitation: she's not a quick finisher. Haze genetics rarely are. If you're used to 8-week Indica harvests, Y Griega will test your patience. The payoff is yield and quality that short-flowering strains simply can't match, but you need to plan for the extra time.

Y Griega Seed Specifications

Growing Y Griega — ScrOG Is Not Optional

We'd go as far as saying ScrOG isn't just recommended for Y Griega — it's the only sensible way to run her indoors. The plant's growth begins with dramatic vertical force, and without a screen to spread that energy horizontally, you'll end up with a single cola stretching into your lights while the lower branches fight for scraps. Weave her through a screen during the first two weeks of flower and she'll fill out a canopy of dense, trichome-covered bud sites that all get equal light.

Here's what we've seen work well with tall Sativa-dominant genetics like this: top her once during veg to break apical dominance, let the side branches catch up, then flip to 12/12 once the canopy is about 70% full. She'll stretch to fill the rest. An 80x80cm tent gives you enough canopy space for 2-4 plants without eating your whole room — and you'll want a carbon filter from day one, because Haze genetics are loud. Your neighbours will know what you're growing before you do.

The resin production on Y Griega is genuinely impressive. By late flower, the sugar leaves are so coated in trichomes they look frosted. If you're into making extracts or dry sift, the trim from this plant is worth keeping — don't throw it away.

Aroma and Sensory Profile of Y Griega

Open a jar of dried Y Griega and the first thing that hits you is that classic Haze sharpness — slightly metallic, slightly sweet, with an earthy base that grounds the whole profile. It's the kind of smell that fills a room in seconds. The Amnesia parent brings the intensity; the Kali Mist adds a cleaner, more floral edge underneath. When you break a bud apart, the stickiness is immediate — your fingers will be tacky with resin before you've finished grinding.

Compared to something like Amnesia Haze on its own, Y Griega's aroma has more depth. The Kali Mist influence rounds off the sometimes one-note sharpness of pure Amnesia into something more layered. It's still unmistakably Haze, but with better manners.

Y Griega vs Other Sativa-Dominant Feminised Seeds

What separates Y Griega from other Sativa-dominant strains in the Medical Seeds catalogue — and from Haze crosses in general — is the combination of extreme THC potential and genuine yield. Plenty of Sativas test high but produce airy, disappointing harvests. Y Griega produces large, dense buds that actually weigh something at harvest. The 27% THC ceiling puts her at the top end of what Sativa-dominant genetics can deliver without autoflower shortcuts.

If you want a pure cerebral Sativa that finishes faster, Kali Mist crosses are worth considering — but you'll sacrifice THC and yield. If you want the Amnesia potency without the unmanageable stretch, Y Griega is the better-bred version of that idea.

How to Grow Y Griega Feminised Seeds

1. Germinate your Y Griega feminised seeds using the paper towel method or directly in a starter plug. Keep temperatures between 22-26°C and maintain consistent moisture. Taproots typically emerge within 48-72 hours.
2. Transplant seedlings into their final containers once the first set of true leaves appears. We'd recommend at least 11-litre pots for ScrOG — these plants develop substantial root systems that need room to spread.
3. Install your ScrOG screen at approximately 40-50cm above the pot rim during vegetative growth. Top the main stem once above the 4th or 5th node to encourage lateral branching.
4. Weave branches through the screen as they grow, tucking new growth under the mesh to create an even canopy. Continue tucking during the first 2 weeks after flipping to 12/12 — Y Griega stretches significantly during early flower.
5. Monitor humidity carefully during mid-to-late flower. Dense, resinous buds combined with a full canopy can create pockets of stagnant air. Keep relative humidity below 50% after week 4 of flower to reduce the risk of mould.
6. Harvest when trichomes shift from clear to milky with a small percentage of amber. For Y Griega's characteristic energetic effect, harvest slightly earlier rather than later — more amber trichomes push the effect toward sedation.