Strain Library

Runtz x Layer Cake is Barney's Farm's cross of the widely-known Runtz genetics with Layer Cake — a balanced 50/50 Indica/Sativa hybrid that produces 28% THC in a genuinely balanced hybrid package. The Runtz side contributes the candy-sweet dessert character that made the Runtz family a modern US classic; Layer Cake brings structural density, compact bud architecture, and additional terpene complexity. The aromatic profile is tropical fruits, herbal, sweet, and spicy — a layered signature that stands out against single-line modern hybrids — and the palate delivers citrus, diesel, earthy, and spicy notes with the complex character the parent lineage suggests. The effect is creative, strong body high, uplifting, and relaxing — genuinely balanced hybrid territory where users get both cerebral energy and body relaxation in proportion.

Shiva Skunk Feminized is Sensi Seeds' strongest skunk variety — an 85% indica, 15% sativa hybrid built from Northern Lights #5 and Skunk #1, with genetic depth that traces back to some of the most decorated strains in the Sensi catalog. The short flowering time and high yield potential make it well-suited to continental climates and indoor rotation, and the distinctive musky, citrusy aroma carries through both growing and consumption. The strain is named after the Hindu deity Shiva — partly because of the traditional cultural association between Shiva and cannabis, partly because the strain is just that powerful. Regular and Automatic variants are also available.

Silver Fire Feminized is an indica/sativa hybrid with a serious genetic pedigree: Sensi's own award-winning Silver Haze crossed with the popular US strain Fire OG. Originally part of the inaugural Sensi Seeds Research project in 2019, Silver Fire proved so popular with the community that Sensi decided to add it to the permanent catalogue — despite it not being one of the final three choices from that first research round. The plants reach average heights with rapid growth during flowering, produce large yields, and carry a spicy, citrusy aroma and taste that trace back to both sides of the lineage. The high is uplifting, euphoric, and potent — a fairly powerful, fast-acting effect that novice users should be ready for, because it comes on quickly and with real intensity.

Cannabis cultivation is effectively inconceivable without Skunk #1. Sensi Seeds' version has been exciting cannabis growers globally for more than a quarter century, and the strain changed cannabis culture in a way few others have — the genetic backbone of an enormous portion of modern hybrids can be traced back to this line. Now available as a premium-quality feminized variant, Skunk #1 combines the energetic high of a sativa with the relaxed stone effect of an indica, with a skunky flavor profile that sits halfway between earthy and sweet. Uniformly growing plants, extreme robustness, and the foundational genetic heritage that defined a whole family of crosses. Often imitated, rarely equaled.

Special Queen 1 is a deliberate throwback to the 1990s skunk-hybrid era - the period when European breeders were racing to replicate the Mexican-Colombian-Afghan hybrid that had been arriving in Europe through the underground and trying to turn it into something reproducible and commercial. The result of that decade of work was the Skunk family that still anchors much of modern cannabis genetics. Special Queen 1 crosses Power Bud into classic Skunk to produce a clean, affordable version of that heritage - deliberately aimed at first-time growers and anyone who wants a no-fuss plant without committing premium-seed pricing to the experiment.

Sticky Queen earns its name through sheer resin production. Its parents are Kosher Kush - a High Times Cannabis Cup winner with a heavy stoning profile and earth-plus-fruit terpene character - and OG Kush, added to the cross to push THC higher and contribute fruity top notes. The result is a 60% indica, 40% sativa hybrid that leans into the body side of its heritage while carrying just enough sativa to keep the high from going fully narcotic. Visually it produces flowers so resin-coated that trim scissors gum up within minutes.

Super Skunk Feminized has been one of Sensi Seeds' most popular strains since its 1990 launch. The lineage is Skunk #1 crossed with a carefully-chosen Afghan from the resinous hash plant family, and the cross won the Mostly Indica award at the Cannabis Cup shortly after release. The split is 80% indica, 20% sativa — heavy enough to anchor the experience firmly in the body, but with enough sativa component to lift mood and keep lethargy away. The feminized format makes cultivation much easier: no male plant identification or culling required, which is a meaningful simplification for less experienced growers. This is what Sensi Seeds created when they decided Skunk #1 could be pushed further on both yield and effect — and the strain has held its position in the catalog for over three decades.

White Widow is one of the strains that made 1990s Dutch cannabis what it is, and like most of the classics its exact origin story has drifted into legend. The generally accepted account is that the original cross pollinated a Brazilian sativa landrace with an indica from Kerala in southern India — an indica selected over years in the mountain regions specifically for extreme resin production. Whatever the precise pedigree, the plant landed in the Netherlands in the early '90s and became one of the most copied lines in the industry, a template for what frosted, balanced hybrid flower could look like. RQS's version works from White Widow S1 genetics and preserves the signature 50% indica / 50% sativa split that defines the variety. Since its first release more than three decades ago, dozens of seed banks have offered their own WW variants; RQS's is among the more disciplined interpretations, prioritizing uniformity, resin potential, and stable phenotype expression over novelty or flash.

White Label's White Widow Regular is the budget-tier interpretation of one of Amsterdam's most recognizable hybrids — 65% indica, 35% sativa, and still a coffeeshop mainstay nearly a quarter century after the original release. The strain gets its name from the thick layer of white trichomes that coats mature buds, a feature that signals the dense THC content underneath. Compact plants, high yield potential, and a genetic line that traces back thousands of years make White Widow a strain that has survived every fashion cycle in cannabis genetics since the 1990s. White Label's version preserves the core genetics while prioritizing accessibility — easy to grow, resistant to temperature fluctuations, and forgiving enough that newcomers growing cannabis for the first time can run it without catastrophe.