To commemorate our 25th anniversary, at Alchimia we’ve joined forces with some of the most prestigious seed banks on the cannabis scene —Philosopher Seeds, Sensi Seeds, Barney’s Farm, BSF Seeds and Sweet Seeds— to create a collection of 7 exclusive varieties. These are genetics you won’t find anywhere else, designed for both old-school nostalgics and those seeking the most innovative strains of the moment. Want to join us and discover them?
Super Silver Haze by Philosopher Seeds: the sativa queen returns in style
Let’s start with a true legend. Super Silver Haze is, without a doubt, one of the most iconic sativas in cannabis history, and Philosopher Seeds has brought it back to life as an exclusive limited edition for our anniversary. If you’ve ever dreamed of growing the same genetics that took Amsterdam’s coffeeshops by storm in the 90s, this is your chance.
Born from the cross of three titans —Northern Lights, Haze and Skunk #1—, this variety combines the best of each world: the vigour and productivity of the Skunk, the resin and controllable structure of the Northern Lights, and that devastating cerebral effect that only the Haze family can deliver. The result is a sativa-dominant hybrid with a stability and quality that few genetics can match.
Indoors, you can expect yields exceeding 550 g/m² with a flowering period of 8 to 10 weeks, more than respectable figures for a sativa of this calibre. And if you let her grow outdoors in good mother soil, get ready: she can easily exceed one kilo of dried bud per plant, with the harvest ready during the first fortnight of October.
Her aromatic profile is complex and intense, with citrus notes, incense and a spicy undertone accompanied by earthy nuances that intensify after a good cure. As for the effect, we’re talking about a primarily cerebral, energetic and stimulating experience, perfect for creative or social activities. A true Old School gem you can’t afford to miss!
Super Skunk by Philosopher Seeds: a tribute to the 80s
If Super Silver Haze is the sativa queen of this collection, Super Skunk by Philosopher Seeds represents the purest and most untamed side of Skunk genetics. This tribute to the 80s recovers a variety that marked a before and after in the history of indoor growing, and does so with all the care and experience that only a seed bank like Philosopher Seeds can offer.
The original Super Skunk was born from the cross between the revolutionary Skunk #1 and a particularly resinous and aromatic Afghani, which endowed the final genetics with extreme potency and a truly fast flowering time. We’re talking about just 7-8 weeks to have your buds ready, something that impatient growers will greatly appreciate.
Her growth habit is fully indica: compact, branchy and highly productive, making her an ideal option for limited spaces and for growers just getting started in this exciting world. The aromatic notes are unmistakable: that spicy, earthy Skunk aroma with citrus nuances, intense and lingering, that fills the room when you brush against the plant. Watch out for those carbon filters — you’re going to need them!
The effect is relaxing, soothing and particularly long-lasting, with indica predominance and that enveloping sensation that leaves you with a silly grin and slightly reddened eyes. A variety to enjoy at the end of the day in total peace and quiet.
White Widow by Philosopher Seeds: return to your roots
Is there a grower in the world who doesn’t know White Widow? Probably not. This Dutch legend, which appeared in the 80s and revolutionised the coffeeshops with its blanket of snow-white trichomes, comes back to life in an exclusive limited edition, White Widow by Philosopher Seeds to celebrate our 25th anniversary.
The genetics are faithful to the original cross: a pure Brazilian Sativa pollinated with a South Indian Indica, whose male came from years of selections in the mountains of Kerala to produce plants with an extraordinary amount of resin. Hence the name: the White Widow, for that layer of trichomes that literally whitens the entire plant.
Her aromatic profile is unmistakable: spicy, pungent and resinous, with a base of pine and old wood over which citrus and fruity nuances emerge depending on the phenotype. The dominant terpenes —myrcene, alpha-pinene and beta-caryophyllene— explain both her aromatic complexity and some of her effects.
And what about the effect? Powerful and immediate: it kicks off with an energetic cerebral euphoria that can catch the uninitiated off guard, then progresses towards a more enveloping physical relaxation. At moderate doses, she proves interesting for creative moments; at generous doses, get ready for a deep rest. Her ease of cultivation and mould resistance make her perfect for both beginners and veterans alike.
Citrus Kiss by BSF Seeds: the new citrus generation
We move from the classics to the cutting edge with Citrus Kiss by BSF Seeds, a modern and tremendously potent genetics that brings a fresh, contemporary touch to our anniversary collection. If you’re into bold citrus flavours and intense yet uplifting effects, this variety is going to win you over.
Citrus Kiss was born from the cross between Lemon Thai and Cherry Pie, two top-tier genetics that together give life to a hybrid with 60% sativa dominance, vigorous and well-branched plants, and a production of dense and extremely resinous flowers. Indoors, she reaches between 450 and 500 g/m² in just 8 weeks of flowering, while outdoors she can reach 600-750 g per plant. Jaw-dropping figures!
But where Citrus Kiss truly shines is in her organoleptic profile. Imagine a burst of sharp lemon, sweet cherry and an earthy undertone that lingers on the palate for quite a while. It’s a sensory experience that goes well beyond the ordinary, making her a perfect candidate for producing high-quality extractions.
With THC levels between 26% and 29%, the effect is potent yet bright: energy, creativity and a prolonged happiness that stays with you for hours. She responds very well to techniques such as SCROG and LST, so more technical growers will love pushing her to her full potential. She also stands out for her pest resistance, making her accessible to beginners as well.
Tangie Jungle Juice by Sensi Seeds: an exclusive with an orange twist
Tangie Jungle Juice is a 60% sativa hybrid born from the cross of two original creations from the Sensi Seeds Research 2021-2022 project: Mandarin Punch (combining Maple Leaf Indica, White Widow, NYC Diesel and California Indica) and Screwdriver OG (Purple Punch x Clementine). A combination of top-tier genetics that guarantees stability and a truly unique aromatic profile.
Indoors, Tangie Jungle Juice finishes flowering at a height of between 100 and 160 cm, offering harvests of 460 to 650 g/m². But if you let her grow outdoors with access to full sunlight, she can easily exceed 2 metres —and even reach 3 metres under optimal conditions— producing between 550 and 750 grams per plant. A true production machine!
The aromatic profile is absolutely enticing: orange cream, mint, chai spices and earthy citrus that combine into an olfactory experience that’s hard to forget. The flavour maintains those orangey, creamy notes up front, with a sweet and spicy chai finish and a fresh, minty aftertaste. Absolutely mouthwatering!
The effect is almost pure sativa: stimulating, creative and sociable. Her buds are also incredibly sticky and loaded with resin, making her a fantastic option for producing top-quality extractions and concentrates. The open, airy structure of her flowers also gives her good mould resistance, a detail that outdoor growers will appreciate.
GrandDaddy Purple by Barney’s Farm: the ultimate purple indica
If you’re the type who enjoys a good couch-lock at the end of the day, GrandDaddy Purple by Barney’s Farm is designed for you. This exclusive edition for our 25th anniversary brings one of California’s most emblematic indicas in all its purple splendour.
Born from the cross between Purple Urkle and Big Bud, we’re looking at a hybrid with 70% indica genetics that inherits the best of both parents: the intense purple colouring and fruity aromatic profile of Purple Urkle, and the ability to produce extraordinarily large and compact buds from Big Bud. With 25% THC, this is not a variety to be taken lightly!
Indoors, GrandDaddy Purple completes her flowering in 55-65 days (around 8-9 weeks) with a production of up to 600 g/m². Her low, bushy structure, standing at around one metre tall, makes her perfect for spaces with limited height. Outdoors, she can reach 180 cm and produce up to 1,000 g per plant, with the harvest ready between the second and third week of October.
The aromatic profile revolves around sweet grape and forest berries, with a spicy, pungent touch that adds depth to the overall experience. On the palate, the grape and berry flavour sits on an earthy base with a subtle, lingering herbal aftertaste. A true treat for the senses!
The effect is distinctly physical and calming: a deep muscular relaxation accompanied by a euphoric, dreamy sensation that lifts the spirits before giving way to the characteristic couch-lock of the most potent indicas. Ideal for evening use or for those moments when you simply want to switch off from the world. Mind you, if you lower nighttime temperatures towards the end of flowering, you’ll be rewarded with spectacular purple tones that will make your grow look like it’s straight out of a magazine.
Sweet Zuchi F1 Fast Version by Sweet Seeds: the most indulgent exclusive
We close this collection with a real showstopper: Sweet Zuchi F1 Fast Version by Sweet Seeds, an exclusive genetics created especially for Alchimia’s 25th anniversary that combines the best of the Zuchi line —based on the legendary combination of Zkittlez, Biscotti and Froyo— with the ultra-fast flowering F1 Fast Version technology that has made Sweet Seeds famous.
What does this mean for you as a grower? Well, you’ll be able to enjoy genetics with a complex and potent flavour —featuring sweet, creamy, fruity notes and a touch of gas and melon that make it absolutely irresistible— but with a significantly reduced flowering period compared to the standard version. This translates into faster harvests without sacrificing a single ounce of quality.
The Zuchi line is known for producing vigorous plants with dense, extremely resinous buds loaded with complex terpenes. The effect is relaxing and euphoric in equal measure, with a sense of well-being that envelops body and mind. It’s a variety that extraction enthusiasts will adore, as the resin production is truly generous.
Being an F1 Fast Version, this variety maintains its photoperiod character (it’s not an autoflower), but flowers much faster than a conventional feminised strain, which is especially interesting for outdoor growers in climates where autumn arrives early or humidity can be an issue. Sweet Seeds and Alchimia have really outdone themselves with this creation!
