Strain Library

Breeder-verified strains with grow data and character profiles

26 results
HybridDutch PassionAuto Ultimate

Auto Ultimate is one of the best-yielding autoflowers in the world and, arguably, the highest-yielding autoflower in the Dutch Passion collection — a robust, vigorous plant that combines exceptional growth energy with generous harvest potential and a high-quality cerebral high. The genetics come from Dutch Passion's original photoperiod parent The Ultimate, which became a bestseller shortly after launch for combining extremely high yields with strong long-lasting effect. Auto Ultimate was created by crossing The Ultimate with the classic bestseller Auto Mazar, and the result inherited the extreme yield potential of its photoperiod parent in autoflower format. This strain has produced single-plant harvests of up to 1 kg of dry bud in expert setups, which is genuinely rare for any autoflower. The aroma mirrors the photoperiod Ultimate — dominant citrus and lime scent with sweet earthy notes developing during flowering, and after drying and curing the citrus becomes even more pronounced with strong lemon and musky character. Flavor-wise she compares to classic Lemon Haze and Lemon Skunk but with her own signature — some smokers pick up a coffee flavor on the exhale. The buds are monstrously big, most at least the size of a golf ball and completely covered in trichomes, carrying an old-school aroma reminiscent of Amsterdam coffee shop culture. Auto Ultimate is a popular strain among concentrate makers because large plants produce many sticky flowers that work equally well for cannabis oil, rosin, shatter, wax, or butter — the sheer biomass plus the terpene density makes her particularly effective as an extract base.

Grow data
Flowering11-14 wks
Indoor yield600+ g/m²
Indoor height100–150 cm
THC18–22%
Autoflower
EnergizingCitrusHigh THC
HybridDutch PassionFrisian Dew

Frisian Dew is Dutch Passion's outdoor flagship — a feminised hybrid that traces its genetics to a cross between a Super Skunk female and a Purple Star male, selectively bred over many generations in Friesland, a northernmost province of the Netherlands where the Frisian language gives the strain its name. The breeding work was done by Shiva, and the result carries genuine hybrid vigor: Sativa genes drive long continuous blooms, Indica genes produce compact buds, and the combination yields one of the most consistent outdoor producers in commercial cannabis. The strain has accumulated real competition hardware — 1st place at the 2008 Highlife Cup in the Netherlands, and more recently 3rd place in the Dutch Hash category at the 2018 Homegrown Cup. She has been a cornerstone of Dutch Passion's Outdoor feminised seed collection for many years and continues to beat newer varieties at the outdoor game with relative ease. Described by users and growers as fruity, fresh, and floral, with terpene variation across phenotypes — some lean toward forest fruits and light lemon, others toward pine and lavender, and a subset express earth, ammonia, and herbal notes that show the Skunk parent influence. The unique terpene profile provides a pleasant smoking experience across the phenotypic range. Roughly 50% of plants produce purple-hued buds in the tops; there are completely green phenotypes and some plants that express pure purple from cola to calyx, and the light purple variant is a particular favorite for taste and potential among Dutch Passion's own team.

Grow data
Flowering8 wks
Indoor yield500–600 g/m²
Indoor height140–200 cm
THC18–22%
Photoperiod
EnergizingFruityHigh THC
HybridSensi SeedsJack Herer

Jack Herer Feminized is Sensi Seeds' tribute to the cannabis activist the strain is named after, and it lives up to its namesake reputation — officially recognized as one of the few medicinal cannabis strains in the Netherlands, and widely regarded as the prime example of an ultra-potent hybrid with dense resin production and high THC content. The hybrid split is a balanced 50% sativa, 50% indica, and the strain was developed specifically for indoor cultivation. Jack Herer has won just about every cannabis award available across multiple decades, and it's Sensi Seeds founder Ben Dronkers' all-time favorite strain — context that matters for a breeder with Ben's catalog depth.

Grow data
Flowering7-10 wks
Indoor yield400–500 g/m²
Indoor height140–200 cm
THC25–27%
Photoperiod
CerebralCitrusVery High THC
HybridDutch PassionPassion #1

Passion #1 is one of the oldest outdoor varieties in the Dutch Passion collection — a feminised hybrid cannabis strain with California origins that have been shaped by Dutch breeding work since 1980. Originally developed as one of the best green outdoor varieties in 1970s California, the strain was formerly known as Amstel Gold and is the result of years of selection and crossing. It's been bred selectively over decades for speed, size, yield, and potency, and the combination of those four traits has made Passion #1 one of the fastest and at the same time largest outdoor varieties available on the commercial market. THC levels can reach nearly 20%, which is high for an outdoor strain and particularly high for one with this growth vigor — Passion #1 is no weak outdoor option. Smokers looking for potent resin-drenched buds from a strain bred explicitly for outdoor cultivation have relatively few better picks. The aroma is fresh, tart, and slightly spicy, dominated by a fruity blend of lemon, lime, and woody herbs — rosemary and thyme come through clearly for experienced palates. The scent is strong without being super-penetrating, a practical advantage for outdoor growers who prefer not to advertise their plants to neighbors or passers-by. The taste follows the aromatic profile: sour citrus notes mixed with a bit of spice and earth, smoking smoothly and producing a strong potent up-high. The sharp, spicy, sour notes can tingle the throat on bigger draws, which some users love and others find notable.

Grow data
Flowering7-9 wks
Indoor yield500–600 g/m²
Indoor height140–200 cm
THC18–20%
Photoperiod
EnergizingCitrusMedium THC
HybridSensi SeedsPower Plant

White Label's Pure Power Plant Feminized is a fast-flowering 60% sativa, 40% indica strain built for quick turnarounds and abundant yields. She's been around since the 1990s and remains popular — a firm favourite in Dutch coffeeshops, often on the menu, and prized for super-sized yields that surpass many other cannabis strains. The strain produces a skunky vanilla-wood aroma during growth that carries through clearly into the finished flavor, and the sativa dominance results in a talkative, uplifting, exuberant high. Grown indoors or in warm outdoor climates, she delivers plentiful yields — as much as 700 grams per square metre under optimal conditions — alongside a focused, energetic effect that the 60% sativa genetics drive directly. Also available as Pure Power Plant Automatic by White Label for autoflower setups.

Grow data
Flowering7-9 wks
Indoor yield450–600 g/m²
Indoor height100–140 cm
THC16–26%
Photoperiod
UpliftingPepperVery High THC
HybridRoyal Queen SeedsWhite Widow

White Widow is one of the strains that made 1990s Dutch cannabis what it is, and like most of the classics her 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 her 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.

Grow data
Flowering8-10 wks
Indoor yield450–500 g/m²
Indoor height100 cm
THC19%
Photoperiod
EnergizingFruityMedium THC
AI-Powered Plant Care

Ready to diagnose?

Start Diagnosis