Silent Seeds: Buy The Full 28-Strain Range In The UK

Because the brand launched in 2021, people assume Silent Seeds are rookies punting untested crosses. They're not. This is a Spanish breeding team with more than twenty years of work behind it, and the shelf gives it away: Critical+ 2.0, Original Amnesia and Moby Dick are cuts growers have been running for the better part of two decades, now sold under a newer name.

Same Hands, Fresh Badge

Silent Seeds breed in Spain from their own clone library, then cross those keepers with outside genetics. Critical Jack Autoflowering, for instance, came from pairing two of their own mothers, Critical+ 2.0 and Haze 2.0 Auto. They also work with Sherbinskis on Polar Gelato, Pink Sunset and Açai Jelly, and with Lemon Tree on Lemon Tree 2.0. There's even a rapper collab, B-45 by Booba. Every pack here is feminised, so nothing in the range needs sexing. If you want to see how the shelf sits against other breeders, our full cannabis seeds selection is the place to compare.

Big Yielders Next To Dessert Crosses

Moby Dick (White Widow x original Haze) is the monster of the range: sativa dominant, up to 3.5m tall outside, 9-10 weeks of flowering and yields around 1500g per plant from a well fed garden specimen. Original Amnesia crosses Northern Lights with Haze, runs 70% sativa, flowers indoors in as little as 65 days and can hand you up to 600g/m². Critical Jack (Critical+ x Jack Herer) wraps in about 60 days and stretches to 3m outdoors. Then there's the sweeter half of the shelf: Lemon Sorbet, Cookielato, Grape Juice, Zkittlez 2.0, LA Vanilla Cake, Starfire OG and Watermelon Runtz. One honest note on Critical+ 2.0's relatives: these plants stretch, so a 60x60 tent will feel cramped fast.

Getting Them Through A British Autumn

Moby Dick and Critical Jack finish mid to late October outdoors, which is late for most UK gardens once the damp sets in. Original Amnesia is the safer outdoor bet from this shelf, since she shrugs off mould and pests better than her stablemates. Otherwise go auto: Critical Jack Autoflowering wraps in 70-80 days and smells sweet, almost caramel, while Polar Gelato Auto keeps things short and quick. Watch out for the stink indoors. OG Kush (Lemon Thai/Pakistani x Chemdawg) can flower in 55 days, but the smell is loud enough that you'll need a proper carbon filter, not an open window.

What Growers Tell Us About This Shelf

Ratings across the Silent Seeds range sit around 4 out of 5, and the feedback repeats itself: quick, even germination, honest yields, plants taller than expected. The main gripe is potency on the older cuts. Their White Widow tests at 16%, the mildest on our shelf, so if you want the same lineage with more punch, White Critical Express by Kalashnikov Seeds lands at 21% and finishes in six to seven weeks.

Where We'd Start

First Silent Seeds packet? Original Amnesia, every time. She's resilient, easy to keep upright with a bit of training, and the buds come back resinous and compact. Short on headroom or patience, take Critical Jack Autoflowering instead and accept the smaller haul.