The 1998 High Times Cannabis Cup was one of the most dominant performances by a single organization in the event’s Amsterdam history. Held in November 1998, the eleventh annual Cup ended with Green House Tolstraat’s Super Silver Haze winning the overall Cannabis Cup, followed by Green House’s El Niño in second and Grey Area’s Grey Mist in third. Green House also captured the Coffeeshop Cup, Bio Cup, Hydro Cup, imported Hash Cup, Dutch Hash Cup and Seed Company Cup. Only the Expo Cup escaped its grasp, going to Sensi Seeds. The surviving results make 1998 less a narrow victory than a near sweep of the competition.
The year also represented a transition in Cannabis Cup culture. The rivalry between Green House and De Dampkring, which had produced the previous two overall champions, effectively broke down when De Dampkring withdrew from the event. At the same time, the Cup continued expanding its cultural mission through the High Times Counterculture Hall of Fame. Activist, poet and musician John Sinclair became one of the defining personalities of the gathering, overseeing tributes to jazz legends Louis Armstrong and Mezz Mezzrow. Against that mixture of competition, controversy and music, Super Silver Haze emerged as the strain of the year—and began a championship run that would continue into 1999.
The Eleventh Cannabis Cup and an Increasingly Commercial Event
By 1998, the Cannabis Cup bore little resemblance to the tiny breeder competition Steven Hager had launched a decade earlier. Public judges, coffeeshop crawls, seed-company exhibits, hash competitions, concerts and educational seminars had turned Thanksgiving week in Amsterdam into an international cannabis gathering. Cultivation writer Jorge Cervantes, who served as one of 11 celebrity judges that year, later remembered judging samples submitted by seed companies including Dutch Passion, Flying Dutchmen, KC Brains, Green House, Paradise, Sagarmatha, SAGE, Sensi and Soma. Judges received multiple samples from the participating breeders while also visiting cultivation facilities, attending seminars and evaluating the seed companies themselves.
That growth brought new tensions. Cup awards had become valuable enough to influence seed sales, coffeeshop tourism and the reputations of entire companies. Winning was no longer merely recognition among a small group of enthusiasts; a first-place trophy could become an international marketing tool. High Times itself has noted in later discussions of the competition that Cup victories could propel strains and brands into widespread recognition. By the end of the 1990s, that commercial value made questions about judging procedures, promotional spending and fairness much harder to ignore.
De Dampkring Withdraws From the Competition
The biggest controversy surrounding the 1998 Cup occurred before the trophies were handed out. De Dampkring withdrew from the competition, reportedly arguing that participation had become too expensive and the Cup too commercial. The decision mattered because De Dampkring had won the two previous overall Cups: White Russian brought the coffeeshop major honors in 1996, and Peace Maker won in 1997. For several years, De Dampkring and Green House had been engaged in what retrospective Cup histories have described as an Amsterdam “bud race,” with the two businesses regularly occupying the top positions.
Its withdrawal left Green House without its most prominent rival and inevitably complicated how the resulting sweep was perceived. Historical summaries record doubts about judging accuracy, while contemporary retrospectives openly acknowledge that the 1998 Green House victory came after De Dampkring stepped aside. That does not erase the documented results—Green House still defeated substantial fields in numerous categories—but it is an important part of the event’s history. An accurate account of the 1998 Cup should therefore recognize both the scale of Green House’s achievement and the controversy surrounding the competitive environment in which it occurred.
Notable Judges and Guests at the 1998 Cannabis Cup
One of the best firsthand records comes from Jorge Cervantes, already well known for Indoor Marijuana Horticulture. Cervantes wrote that he was one of 11 celebrity judges at the eleventh Cup and described the job as involving far more than simply smoking anonymous samples. Judges toured breeding and cultivation operations, evaluated seed companies, participated in seminars and attended the surrounding festival events. His account offers a useful reminder that the Seed Cup in this period was partly an evaluation of the breeder’s overall operation rather than a single blind flower sample.
The most memorable cultural guest, however, was John Sinclair. Sinclair had been a leading figure in Detroit counterculture, a poet, political activist and former manager of the MC5, and his marijuana imprisonment in the early 1970s had become a major civil-liberties cause. At the 1998 Cannabis Cup, he appeared with his Blues Scholars and assumed what historical accounts describe as a “high priest” role during the ceremonies. Sinclair also created and performed material celebrating the jazz musicians being inducted into the Counterculture Hall of Fame. His later recording history identifies his Viper Mad material as work originally composed for and premiered at the 1998 Amsterdam Cannabis Cup.
Louis Armstrong and Mezz Mezzrow Enter the Counterculture Hall of Fame
High Times had established its Counterculture Hall of Fame in 1997, when Bob Marley became the first inductee. The following year shifted the focus from reggae to an earlier cannabis subculture: jazz. Louis Armstrong and Mezz Mezzrow became the second and third Hall of Fame inductees, with John Sinclair overseeing the tribute. Armstrong’s association with marijuana was part of a much larger history of cannabis use among early jazz musicians, while Mezzrow became so closely associated with supplying marijuana to musicians that his name itself entered jazz-era cannabis slang.
Sinclair summarized the distinction between them with a memorable line preserved in several Cup histories: Armstrong contributed the music, while Mezzrow contributed the marijuana supply. The tribute was more than a novelty between cannabis awards. It reflected High Times’ growing effort to place contemporary cannabis culture within a historical lineage stretching through jazz, Beat literature, reggae, political activism and other countercultural movements. The Hall of Fame would become a fixture of later Amsterdam Cups, but the 1998 ceremony was the first to broaden the institution beyond its inaugural Bob Marley tribute.
1998 High Times Cannabis Cup Winners in All Categories
The strongest surviving 1998 result archive documents eight major competitive categories: the overall Cannabis Cup, Coffeeshop Cup, Bio Cup, Hydro Cup, Hash Cup, Dutch Hash Cup, Seed Cup and Expo Cup. SeedFinder independently confirms the flower podiums, while Green House and Sensi Seeds’ own award archives corroborate many of the company-level victories.
| 1998 Category | 1st Place | 2nd Place | 3rd Place |
|---|---|---|---|
| Cannabis Cup / Best Cannabis | Super Silver Haze — Green House Tolstraat | El Niño — Green House Tolstraat | Grey Mist — Grey Area |
| Coffeeshop Cup | Green House Tolstraat | De Rokerij | Grey Area |
| Bio Cup | El Niño — Green House Tolstraat | Grey Mist — Grey Area | White Widow — Dread Rock |
| Hydro Cup | Super Silver Haze — Green House Tolstraat | Stone Hedge — Grey Area | Siberian Tiger — Siberië |
| Hash Cup / Imported Hash | King Hassan Elite — Green House Tolstraat | Nepalese Temple Balls — Barney’s Breakfast Bar | Rokerij Special — De Rokerij |
| Dutch Hash / Nederhash Cup | Shanti Baba / Baba’s Hash — Green House Tolstraat* | Golden Soles — Grey Area | Choco Scuff — Chocolata |
| Seed Company Cup | The Green House | Sensi Seeds | The Flying Dutchmen |
| Expo Cup | Sensi Seeds | Jerome Baker | The Green House |
*There is an archival naming discrepancy in the Nederhash division. The detailed Cannabis Cup result archive calls the winning Green House entry “Shanti Baba,” while Green House’s own historical award list records its 1998 Nederhash victory as “Baba’s Hash.” Both sources agree that Green House won the category.
Some general histories also refer to a separate “Hemp Cup” associated with Jerome Baker glass, but a dependable full podium for that title is not preserved alongside the main 1998 results. The detailed event record instead lists Jerome Baker second in the Expo Cup behind Sensi Seeds. Because the archival terminology is inconsistent, it is safer to treat the eight categories above as the complete set of reliably reconstructed Cup podiums rather than invent an additional ranking.
Super Silver Haze Takes the Overall and Hydro Cups
The cultivar that defined the year was Super Silver Haze. Green House records its ancestry as a combination of Skunk, Northern Lights and Haze, three genetic families that had dominated Cannabis Cup history since the event’s earliest years. Rather than being an entirely new departure, Super Silver Haze represented a sophisticated refinement of the Dutch breeding tradition: Haze supplied the strongly sativa-oriented character, while Northern Lights and Skunk helped improve flower density, resin production and practical indoor performance. Green House’s official history confirms that the strain won the Hydro Cup in 1997, followed by overall High Times Cannabis Cup championships in both 1998 and 1999.
That sequence is worth stating precisely. Super Silver Haze is sometimes described as winning three straight overall Cannabis Cups, but the 1997 result was specifically the Hydro Cup; its overall championship run began in 1998. By winning both overall and Hydro in 1998 and returning to take the overall title again in 1999, the cultivar nevertheless achieved one of the strongest competitive records of the Amsterdam era. High Times later described the 1998 victory as the beginning of the Super Silver Haze era and noted that the cultivar became the first strain to repeat as overall champion the following year.
Who Bred Super Silver Haze?
As with White Widow, the individual breeding credit for Super Silver Haze has become disputed over time. Green House Seed Company currently credits Arjan and describes the cultivar as Skunk × Northern Lights × Haze, while breeder histories connected with Scott Blakey, better known as Shantibaba, and Nevil Schoenmakers assign substantial breeding work to the partnership that existed around Green House in the late 1990s. The Cup result itself is not controversial: the 1998 winning entry was unquestionably submitted by Green House. The disagreement concerns who should receive personal credit for developing the genetics behind it.
That distinction matters because the winning pedigree represented decades of earlier work. Northern Lights and Haze had been central to Nevil Schoenmakers’ breeding programs, while Skunk #1 had won the inaugural Cannabis Cup ten years earlier. Super Silver Haze effectively combined the three foundational genetic pillars that repeatedly appear throughout the first decade of Cup results. Whatever individual name is attached to its creation, the plant was a culmination of the North American-to-Dutch genetic exchange that had originally made the Cannabis Cup possible.
El Niño Gives Green House First and Second Overall
Green House’s domination did not stop with Super Silver Haze. El Niño finished second overall and won the Bio Cup, defeating Grey Area’s Grey Mist and Dread Rock’s White Widow in the organic division. Green House’s own award archive confirms both results. Having the first- and second-place overall cannabis entries was particularly significant because it demonstrated that the company’s success was not dependent on one exceptional sample. The same organization was producing or presenting elite entries across multiple cultivation styles.
Grey Area remained Green House’s strongest flower competitor. Grey Mist finished third overall and second in Bio, while Stone Hedge took second in Hydro and Golden Soles finished second in Dutch Hash. Siberië’s Siberian Tiger completed the Hydro podium, while Dread Rock kept the White Widow name alive with third place in Bio three years after the strain’s famous 1995 championship. The results reveal how deeply the genetics introduced during the middle of the decade had spread through Amsterdam’s coffeeshop scene.
Green House Sweeps Both Hash Divisions
The 1998 concentrate competitions reinforced Green House’s dominance. King Hassan Elite won the Hash Cup, beating Barney’s Breakfast Bar’s Nepalese Temple Balls and De Rokerij’s Rokerij Special. Green House had already won the corresponding imported-hash category with King Hassan in 1997, so the “Elite” version gave the operation a second consecutive first-place finish. The results also marked an early important appearance for Barney’s Breakfast Bar, which would become one of the defining Cannabis Cup businesses of the 2000s.
The separate Nederhash or Dutch Hash Cup represented locally produced concentrates. Green House again won, with the entry recorded variously as Shanti Baba or Baba’s Hash, followed by Grey Area’s Golden Soles and Chocolata’s Choco Scuff. Maintaining separate imported and Dutch hash divisions showed how rapidly concentrate culture was developing. The Cup still honored resin traditions associated with Morocco, Nepal and other historic producing regions, but Amsterdam-grown cannabis was now supporting its own increasingly sophisticated hash industry.
Green House Wins the Seed Cup, Sensi Seeds Wins the Expo
The Seed Company Cup completed Green House’s extraordinary cannabis-side sweep. Green House finished first, Sensi Seeds second and The Flying Dutchmen third. Jorge Cervantes’ firsthand recollection suggests the field was considerably larger than the podium alone indicates: he names Dutch Passion, Flying Dutchmen, KC Brains, Green House, Paradise, Sagarmatha, SAGE, Sensi and Soma among the seed companies supplying judging samples. Winning therefore represented a broad evaluation against many of the major European breeders operating at the end of the 1990s.
Sensi Seeds prevented a complete Green House sweep by taking first place in the Expo Cup, with Jerome Baker second and Green House third. Sensi’s own historical award list confirms the victory and shows that 1998 was the second in a remarkable series of Expo wins that continued into the following decade. The result illustrates how the Cup had expanded beyond flower genetics: booth design, education, presentation and brand presence now had their own competitive value.
Controversy Around the Green House “Golden Grand Slam”
Historical Cannabis Cup summaries have described Green House’s performance as a “golden grand slam.” With first place overall, first in Coffeeshop, Bio, Hydro, imported Hash, Nederhash and Seed Company, that description is understandable. Green House’s own modern award record independently preserves each of those first-place finishes and also notes its third-place Expo result. Few Cannabis Cups produced such a concentrated collection of trophies for one organization.
Yet the sweep also contributed to concerns about how commercial the event had become. De Dampkring’s absence removed the defending two-time overall winner from the field, and historical Cup accounts explicitly mention questions about judging accuracy. Those doubts became part of the competition’s history rather than a reason to discard its results. By 1998 the Cannabis Cup had become commercially important enough that allegations of favoritism, strategic campaigning and competitive spending were almost inevitable. The event had succeeded in making its trophies valuable—and that very success made the process behind awarding them subject to greater scrutiny.
Legacy of the 1998 High Times Cannabis Cup
The 1998 High Times Cannabis Cup stands as the year Green House became the dominant force in Amsterdam competition. Super Silver Haze won the overall and Hydro Cups, El Niño finished second overall and won Bio, King Hassan Elite captured imported Hash, Green House won Nederhash and the Coffeeshop Cup, and the company also topped the Seed Cup. Grey Area supplied several of the strongest challengers, while Sensi Seeds preserved its position as another industry heavyweight by winning the Expo Cup. Most importantly, Super Silver Haze established itself as the cultivar to beat and would return the following year to become the first repeat overall champion of the Cannabis Cup era.
At the same time, the gathering demonstrated that High Times was increasingly interested in preserving counterculture history alongside cannabis genetics. John Sinclair brought jazz, poetry and marijuana activism into the ceremonies, while Louis Armstrong and Mezz Mezzrow joined Bob Marley in the newly created Counterculture Hall of Fame. The competitive controversy surrounding De Dampkring’s withdrawal showed how far the Cup had traveled from its informal beginnings: there was now enough money, prestige and international attention at stake for businesses to question the system itself. Ten years after Skunk #1 won a tiny breeder contest, the 1998 Cannabis Cup had become a genuine cannabis institution—and Super Silver Haze emerged as one of its defining champions.
