Pineapple Express: how a movie killed a lineage

A weather report, a script, a strain#

Long before it was weed, "Pineapple Express" was weather. Forecasters use the name for a firehose-sized river of tropical moisture that flows from the waters around Hawaii to the North American West Coast and can dump inches of rain in a day [1]. Seth Rogen and Evan Goldberg grew up in Vancouver, under those storms. They borrowed the name for the fictional super-strain at the centre of their 2008 film [2].

On the film's tenth anniversary, Rogen was blunt about it: "There was NO strain of weed called #PineappleExpress when we made the movie" [3]. They hoped someone would start selling it one day. Within a few years, everyone was. Careful what you wish for.

There's a wrinkle. Many strain sites credit G13 Labs with a Pineapple Express bred from Trainwreck and Hawaiian, and some date it to before the film. A 2010 issue of High Times told a third story: the strain came from a selected Cinderella 99 plant [4]. Which came first, the strain or the movie? The record can't settle it, so we won't pretend it does. What it can show is what happened next.

One more theory does the rounds: that Rogen and Goldberg bred the strain themselves for the film. A 2021 Cult MTL piece points to their cannabis know-how and to Rogen saying in 2014 that they named the weed after the movie when they created it [6]. The record doesn't back it up. Their cannabis brand, Houseplant, launched in Canada in 2019 with Canopy Growth, eleven years after the film [7]; the partnership ended in 2021 [8]. Rogen has picked Houseplant's strains from established growers rather than breeding them. Its California line-up (Diablo Wind, Pancake Ice and Pink Moon) comes from other breeders' crosses, with no Pineapple Express among them [9]. His 2018 line, hoping people would one day sell weed by that name, reads like a name waiting for a plant.

The pair do have a habit, though. Diablo Wind is a California wind and pancake ice is a form of sea ice. Over a decade later they were still naming cannabis after weather, just as they did with Pineapple Express.

One name, more than forty breeders#

CannaLib holds Pineapple Express listings from more than 40 different breeders and seed banks: feminised seeds, autoflowers, clone-only cuts and "unknown or legendary". 312 strain and product names in our catalogue contain the words Pineapple Express. In Washington State's market records from 2018 to 2021 it ranks 28th of 26,118 strain names, with 141,226 inventory lots (batches on the shelf) sold under it.

Each seller tells its own origin story. Strip out the duplicates and we count at least seven different parentages. It's like seven people each telling the "how my parents met" story, and not one of the stories matches.

Some are close cousins of the G13 story: Trainwreck and Hawaiian, or a Skunk, Hawaiian and Trainwreck mix. Others share nothing with it. Big Bud × Hawaiian Skunk. Trainwreck × Kona Gold. Pineapple × Lemon Kush. Pineapple Chunk with ruderalis for an autoflower. One seller lists Pineapple Express as a parent of its own Pineapple Express, a time-travel paradox, but make it weed.

The name became bigger than any plant. Once that happens, every breeder can fill it with whatever smells of pineapple.

What the DNA says#

A public genotype panel of 2,264 cannabis samples includes one sold as Pineapple Express [5]. We measured its kinship to every stated parent that also appears in the panel: Trainwreck, Hawaiian, Pineapple, Pineapple Chunk, Lemon Kush and Skunk #1. Think of kinship as a family-resemblance meter. A parent passes on half its DNA, which scores about 0.25 on this scale. Grandparents and half-siblings score about 0.125, and the same plant twice scores about 0.5. Zero means no more related than two random samples (total strangers), and below zero means even less alike than strangers. None of the six comes close: the best, Skunk #1, scores 0.05, barely above a stranger off the street, and Trainwreck and Pineapple Chunk sit far below zero.

Two cautions. This is one plant sold as Pineapple Express, not every Pineapple Express. And the "parent" samples are also plants sold under a name, so a wrong Trainwreck in the panel could hide a real link. What the test can say is that this plant doesn't look like the child of any parent it's sold with.

So we asked the reverse question: which of the 2,264 samples is it actually closest to? About a dozen score at the level of a parent, child or full sibling. The test can't say which of those relationships it is, only how close. It's like a DNA test telling you someone at the party is very close family without saying whether they're your dad, your kid or your brother. And the list looks nothing like the label.

Its relatives are classic European seed-bank lines: White Siberian, Northern Lights #5, MK-Ultra, Mazari Grape and Cinderella 99. The California Trainwreck at the heart of the most repeated story is about as unrelated as it gets in this panel. "Hawaiian" does turn up, but as Dutch Hawaiian, not the sample sold as plain Hawaiian.

Cinderella 99 is the plant High Times named as the source in 2010, eight years before Rogen's tweet. One sample can't prove an origin story. But of all the stories, the DNA sits nearest the one that's least repeated.

Lineage out, brand in#

The cup record shows what the name turned into: less a plant than a personality. Our results hold 16 placings for Pineapple Express products, all from 2014 or later. Only four were for flower. The rest went to hash, concentrates, vape cartridges, infused pre-rolls, moon rocks and even a delivery service.

That's how a movie kills a lineage. Nobody destroyed a plant. The name just became worth more than the family tree behind it, so it was filled again and again: by seed lines, by autoflowers, by vape flavours.

So what is Pineapple Express?#

Put every measurement CannaLib holds side by side and a clear answer comes out. It's just not the answer on the seed pack.

So, according to the data, Pineapple Express is a name for a strong, THC-dominant flower that buyers and sellers describe as fruity. Its potency is reliable: buy something labelled Pineapple Express and it will most likely test somewhere between 14% and 25% THC (median 20%) with almost no CBD. Everything else changes with whoever grew it. Its terpenes vary more than almost any strain we track, its family tree is contested, and the only DNA sample we can test doesn't belong to any family it's sold with.

If there was ever one Pineapple Express plant, a G13 cross or a selected Cinderella 99, it's now one voice among forty. What survives is the potency, the fruity reputation and the name.

It's a lesson for every hyped name since: Gelato, Runtz, Zkittlez. When demand outruns the cuttings, the name stays and the plant changes.