Strain Stories
The story on the label. The story in the data.
Every strain name comes with a story: who bred it, where it came from, how strong it is, what it won. We check each one against CannaLib's lab tests, DNA panels and cup results, and print what holds up next to what doesn't.
- 35stories
- 6series
- strains indexed
One in three THC claims is higher than every lab test of that strain
We lined up 2,601 seed-bank and breeder THC claims against real flower lab tests sold under the same strain names. Plenty of packs promise more than any lab test we hold. Spoiler: the number on the front is doing a lot of heavy lifting.
Read the story →Label vs Lab
Five data investigations: what the pack says, and what the lab, the DNA, the cup results and the paper trail say back.
- No.01Label vs Lab
One in three THC claims is higher than every lab test of that strain
We compared 2,601 seed-bank THC claims with real flower lab tests. 32.9% claim more THC than any lab test we hold for that strain.
1 in 3of THC claims beat every lab testRead the story → - No.02Label vs Lab
We found one plant sold under 50 different names
DNA from 2,264 cannabis samples shows one plant sold under 50 names, and 14 Blue Dream samples coming from five different plants. Here's what the genetics say, in plain English.
50names for one genomeRead the story → - No.03Label vs Lab
Indica or sativa? The DNA barely agrees with the label
We tested indica and sativa labels against public cannabis DNA. In modern strains the genetics predict about 15% of the label, like guessing a movie's ending from its trailer. THC and CBD balance shows up far more clearly.
15%of the label the DNA predictsRead the story → - No.04Label vs Lab
"Award-winning"? We could confirm 43% of the claims we could check
We checked 7,627 cannabis award claims against 21,141 published cup results. 54% are too vague to check; of the 797 cleanest claims, 43% matched.
43%of checkable award claims matchRead the story → - No.05Label vs Lab
The stairway is gone, the printouts aren't
A Montreal seed shop's website vanished in 2006. 18 scanned printouts from around 2000 are all we know of it. We fact-checked its claims and toured other lost cannabis resources to show how hard a trustworthy original source is to find.
42strains on 18 printouts of a shop that vanished in 2006Read the story →
Lineage Under the Limelight
Strains named by movies, TV and cartoons: the story everyone repeats, then what the record and the plant show.
About the series- 1Pineapple Express: how a movie killed a lineage
- 2Bruce Banner: the Hulk that wasn't
- 3Purple Urkle: did I do that?
- 4These aren't the strains you're looking for
- 5White Russian: the Dude came late
- 6Girl Scout Cookies: Thin Mints and cease-and-desist letters
- 7Romulan: the strain from the Neutral Zone
- 8Zkittlez: taste the rainbow, spell it with a Z
- Ep.01Lineage Under the Limelight
Pineapple Express: how a movie killed a lineage
Seth Rogen says Pineapple Express weed didn't exist before the movie. Now 40+ breeders sell it with 7 different family trees, and the one DNA sample we can test fits none of them.
7family trees, none fit the DNARead the story → - Ep.02Lineage Under the Limelight
Bruce Banner: the Hulk that wasn't
Bruce Banner wasn't named after the Hulk. Its breeder says it's a joke on his surname (Holck). We checked 2,365 lab tests and the DNA to see how strong it really is, and found a sample sold as Scooby Snacks that measures as the same plant.
Holckthe breeder's surnameRead the story → - Ep.03Lineage Under the Limelight
Purple Urkle: did I do that?
Purple Urkle is said to be named after Steve Urkel. The DNA says the plant sold under it is also sold as Grand Daddy Purple and 13 other names; 707 lab tests put its THC median at 17.6%.
14names for one plant in a DNA panelRead the story → - Ep.04Lineage Under the Limelight
These aren't the strains you're looking for
Skywalker, Death Star, Jedi OG and Ewok: the Star Wars strains were renamed as a precaution in 2018. We checked the lab data, and a public DNA panel shows three samples sold as Skywalker are two plants, one of them OG Kush.
3 → 2samples sold as Skywalker, two plantsRead the story → - Ep.05Lineage Under the Limelight
White Russian: the Dude came late
White Russian the strain won the 1996 Cannabis Cup, two years before The Big Lebowski. We checked the dates and the lab tests (517, median 18.4% THC) behind a famous name.
1996year it won the Cup, two years before the filmRead the story → - Ep.06Lineage Under the Limelight
Girl Scout Cookies: Thin Mints and cease-and-desist letters
In January 2017 the Girl Scouts of the USA sent cease-and-desist letters over the strain name Girl Scout Cookies. We report what the letters said, where sources disagree on the strain's origin, and what our upcoming DNA and lab release will test.
1936year GSUSA's statement says its trademark dates back toRead the story → - Ep.07Lineage Under the Limelight
Romulan: the strain from the Neutral Zone
Romulan has at least seven origin stories and four recorded parents, each with a single source. We lined up the dated sources, 702 lab tests and an upcoming DNA finding to see what holds.
37breeders sell it, nobody agrees where it came fromRead the story → - Ep.08Lineage Under the Limelight
Zkittlez: taste the rainbow, spell it with a Z
A candy maker sued the breeder of Zkittlez in 2021 over the name. We lay out the dated court record and both sides' statements, then say what we will test in the plant.
$250Kdamages sought by the candy makerRead the story →
Field notes
Plain-language guides: reading a family tree, checking a label, keeping the records alive.
- Note01Field notes
Don't breed blind: check the family tree before you cross
Before you cross two cultivars, check whether they share a grandparent. CannaLib lays out 143,611 named strains, 118,039 parent links and every competing breeder claim with its source.
118,039parent-to-child links to check before you crossRead the story → - Note02Field notes
Where did your weed actually come from? Stop trusting the jar, check the family tree
Wondering where your favorite strain really came from? CannaLib shows the competing family-tree stories with their sources, and checks cup-winner claims against published results.
1,599of 4,826 award claims confirmed so farRead the story → - Note03Field notes
Weed has a label problem: a field guide to 10 cannabis strain libraries
A field guide to ten cannabis strain libraries, scored on a rubric CannaLib wrote and disclosed up front. SeedFinder, Kannapedia, GrowDiaries, Leafly and more.
10strain libraries, one disclosed conflict of interestRead the story → - Note04Field notes
Don't let cannabis history expire with the domain name
Cannabis breeding history lives in catalogs and forum threads that keep disappearing. CannaLib is a public library that keeps the receipts, including competing claims, before the links die.
1,194sources kept with the claims they backRead the story → - Note05Field notes
57,015 strains in rings: how we drew a family tree that won't stop branching
143,611 named cannabis strains, 118,039 parent links and 7.36 million evidence-backed data points, drawn as a radial map of 57,015 strains. How the graph is built and where the data fights back.
57,015strains drawn in generation ringsRead the story →
Policy watch
Where cannabis law is moving, country by country and ballot by ballot, checked against statutes and regulator pages.
- Brief01Policy watch
Thailand's weed U-turn: a million free plants, then a prescription pad
Thailand delisted cannabis in 2022, then reversed. The 2025 prescription rule, shop closures and 2026 draft Cannabis Control Act, as of 13 October 2026.
166 to 0the 2018 vote that opened medical cannabisRead the story → - Brief02Policy watch
Five European cannabis models, no two alike
Europe's cannabis patchwork as of 13 October 2026: home grow, clubs, trials, medical-only and Italy's hemp ban, with EUDA 2026 data and sourced limits.
8.7%of European adults used cannabis in the past yearRead the story → - Brief03Policy watch
Australia's green rush, on prescription
SAS-B approvals for medicinal cannabis tripled from 2020 to 2024. What the TGA and Ahpra say about it, and NSW's new drug-driving law, as of 13 October 2026.
177,762special access approvals in 2024, up from 57,711Read the story → - Brief04Policy watch
Germany, two and a half years into legal weed
Germany at 2.5 years: clubs reach at most 3.5% of consumers, home growing is up, medical imports have nearly tripled and the MedCanG bill is stuck.
21.4%of consumers mainly grow their own, up from 5.4%Read the story → - Brief05Policy watch
Last orders: America's petrol-station THC has until 11 December
The US hemp THC ban explained: 0.4 mg per container, THCA counted, 12 November for synthetics and 11 December for the rest. As of 13 October 2026.
11 Dec2026, when most US intoxicating hemp limits startRead the story → - Brief06Policy watch
Could Massachusetts un-legalise cannabis? Question 8, explained
Massachusetts Question 8 would end legal cannabis retail from 2028. Idaho HJR 4 would leave legalisation to the legislature. The facts, as of 13 October 2026.
17adult-use measures voters approved from 2012 to 2023Read the story →
Science and health
What the genetics, chemistry and the big health studies actually found, with the limits left in.
- Study01Science and health
Indica, sativa and other comforting fictions
Three studies of cannabis genetics and chemistry find indica, sativa and hybrid labels barely track the plants. What the labels do capture, and how to read a lab result.
122samples of 30 named strains in the genotyping studyRead the story → - Study02Science and health
The entourage effect, on trial
The cannabis entourage effect on trial: two small human studies, one mouse study and three Australasian lab studies that found no terpene effect.
20people in the strongest human limonene trialRead the story → - Study03Science and health
It was never just the terpenes
Four studies on cannabis aroma: skunk is a sulfur compound, gas has a faecal relative, and terpenes explained only 10 to 15% of what panels smelled.
91flower samples in the 2025 aroma panel studyRead the story → - Study04Science and health
Your THC number is a vibe
A 2026 Massachusetts audit found 13 of 63 flower products tested well below their labelled THC. Here is what the studies say about label inflation, and how to read a THC number.
13 of 63audited products tested below their THC labelRead the story → - Study05Science and health
Strong cannabis and psychosis: what the big studies can and can't say
What five major studies found on high-THC cannabis and psychosis, what they cannot prove, and why young men carry most of the population risk.
37.1%of first-episode patients used high-potency cannabisRead the story → - Study06Science and health
Cannabis and the heart: what the big studies actually found
Four big analyses link cannabis use to heart attack, stroke and cardiovascular death. We read each one: design, numbers, caveats and the critics.
434,104Americans in the survey behind the heart attack headlinesRead the story → - Study07Science and health
Pints for joints: is cannabis really replacing alcohol?
A cannabis-company poll says 65.8% of users cut back on drinking. We check it against a university survey, a lab study, a 95-study review and Gallup data.
65.8%of polled consumers said they cut back on alcoholRead the story → - Study08Science and health
Cannabis hyperemesis got its own code. The count nearly quadrupled
Cannabis hyperemesis syndrome got US code R11.16 on 1 Oct 2025 and recorded ED visits rose 3.7-fold. What the CDC data, Ontario study and trials show.
11.97ED visits per 10,000 after the code, from 3.19Read the story →
Data and culture
What the CannaLib catalogue shows about family trees, landraces, flowering times and the cups that crown them.
- Data01Data and culture
Landraces: where the cannabis family tree runs out
Cannabis was domesticated in East Asia about 12,000 years ago. We follow modern strains back to the landraces underneath them, and to where the records stop.
49,956of 57,015 strains reach a place-of-origin recordRead the story → - Data02Data and culture
The cannabis family tree has loops in it
CannaLib mapped 118,186 parent links between 57,015 cannabis strains. Most pedigrees stop two generations out, and 578 strains are on paper their own ancestors.
563strains caught in the biggest lineage loopRead the story → - Data03Data and culture
Does winning a cannabis cup mean anything?
How cannabis cups judge: paid public kits versus blind, lab-tested panels, what a win can and can't tell you, and the early winners behind today's gene pool.
21,141competition results across 264 competitionsRead the story →
Three rules
The same ones in every story, so you know what a number means before you quote it.
- 01
Every number has a source
Lab tests, DNA panels, cup results or a dated press piece. If we can't point to it, we don't print it.
- 02
Hedges as strong as the data
"A sample sold as X" is not "X". One sample can't prove a family tree, and we say so out loud.
- 03
The plant gets the last word
Folklore is fun. When the DNA disagrees with the story, the DNA goes in the headline.
The tools behind the stories
Every story uses the same four CannaLib tools you can open yourself.
- Explorer
Every claim, test and alias for one strain, on one card.
Open → - Lineage sky map
The family tree, drawn from recorded parent-to-child edges.
Open → - Awards audit
Which "award-winning" claims line up with cup records, and which don't.
Open → - API
The same data, as JSON, for your own spreadsheet or app.
Open →