CANNALIB · STRAIN DOSSIER · JACK HERER
Jack Herer
8 independent sources put THC at 20%; 2,725 flower lab samples give a 10th to 90th percentile band of 13.977 to 24.969%; 10 recorded parents; 568 recorded descendants. It placed in results from DC Grower’s Cup, Highlife Cup (Netherlands) and Karma Cup, and 2 more.
● frozen 2026-09-14 · API 0.7.0-stdlib
● evidence bar: thc 3 independent sources
● type: sativa dominant hybrid
20%
THC, most-agreed claim
8 independent sources
13.977–24.969%
Flower lab range
10th to 90th percentile of 2,725 samples
10
Recorded parents
with sources, never guessed
568
Recorded descendants
through stated parent links
23/25
Cup results, verified/total
placings found in published results
68
Pictures on record
shown with source and credit
CHEMISTRY, CLAIM BY CLAIM
Every THC claim, and who made it.
| THC | Independent sources | Who states it |
|---|---|---|
| 20% | 8 | cannlytics_expand, or_prr00150, replication_data, weedseedsexpress, cannabis_intelligence, bank_blim-burn-seeds, seedfinder, bank_azarius_seeds |
| 18% | 4 | greenhouse, cannlytics_expand, or_prr00150, leafly_flat, leafly_flat_enrich |
| 22% | 4 | cannareviews, cannlytics_expand, or_prr00150, replication_data |
| 15.7% | 3 | or_prr00150, maxvalue_terpenes, smith_phytochem_sample |
| 16.4% | 3 | or_prr00150, seedcity_local, cannlytics_expand |
| 16.6% | 3 | or_prr00150, replication_data, cannlytics_expand |
| 16.7% | 3 | or_prr00150, replication_data, cannlytics_expand |
| 16.9% | 3 | or_prr00150, replication_data, cannlytics_expand |
| 17% | 3 | cannlytics_expand, or_prr00150, medical_effects |
| 19.31% | 3 | or_prr00150, replication_data, cannlytics_expand |
2 more THC claims are on the live card.
Lab range 13.977 to 24.969% THC is the 10th to 90th percentile of 2,725 flower lab samples (median 19.9). CBD 0 to 0.3% over 1,449 samples. It is a band, not an average, and it is shown only because there are three or more samples.
top terpenes by stated value: myrcene, pinene, humulene, limonene, caryophyllene, nerolidol, terpinolene, beta ocimene
4,223 chemistry rows on record. Flagged rows never used as potency: 561 non flower, 870 quality flagged.
GROW CLAIMS
Height and flowering, as stated.
| Height | Independent sources | Who states it |
|---|---|---|
| 150 to 180 cm | 7 | alchimia, bank_azarius_seeds, fastbuds, greenhouse, truenorth, cannaconnection, seedfinder |
| 80 to 120 cm | 2 | seedcity, seedcity_local |
| 99 cm | 2 | seedcity, seedcity_local |
| 127 cm | 2 | seedcity, seedcity_local |
| 137 cm | 2 | seedcity, seedcity_local |
| 160.02 cm | 1 | bank_blim-burn-seeds |
| 165 cm | 1 | seedfinder |
| Flowering | Independent sources | Who states it |
|---|---|---|
| 56 to 70 days | 6 | bank_azarius_seeds, cannaconnection, seedcity, seedcity_local, bank_freedom-of-seeds, seedfinder |
| 56 days | 4 | seedcity, seedcity_local, seedfinder, alchimia |
| 56 to 63 days | 4 | seedcity, seedcity_local, alchimia, seedfinder, master |
| 50 to 60 days | 3 | seedcity, seedcity_local, alchimia |
| 63 days | 3 | seedfinder, fastbuds, alchimia |
| 70 to 77 days | 3 | seedcity, seedcity_local, seedfinder |
| 70 to 98 days | 3 | alchimia, fastbuds, truenorth, master |
| 57 days | 2 | seedcity, seedcity_local |
| 70 days | 2 | seedfinder, alchimia |
| 49 days | 1 | greenhouse |
2 more Flowering claims are on the live card.
LINEAGE
Recorded parents, and how many sources agree.
| Parent | Sources | Who states it |
|---|---|---|
| Haze | 1 | strain_fact:alchimia,seedfinder |
| NL5 x Haze | 1 | seedfinder:parents |
| Northern Lights | 1 | strain_fact:alchimia,seedfinder |
| Northern Lights #5 | 1 | strain_fact:alchimia,seedfinder |
| Red Skunk | 1 | strain_fact:alchimia,seedfinder |
| Shiva Skunk | 1 | strain_fact:alchimia,seedfinder |
| G-13 | 1 | strain_fact:seedfinder |
| NL5 | 1 | strain_fact:seedfinder |
| Skunk low confidence | 1 | strain_fact:seedfinder |
| Skunk 1 low confidence | 1 | strain_fact:seedfinder |
568 descendants through recorded links, including Jack's Dream, 710 Mango Seeds, Amur Giant Seeds, Auto Black JH Seeds, Auto Jack Herer Seeds, Auto Somango Seeds, Bc Diesel Seeds, Black Herer Seeds (EGS). 23 sub-varieties and 2 phenotypes or cuts are linked to this cultivar.
COMPETITIONS AND AWARD CLAIMS
Cup results with sources; claims with verdicts.
| Year | Competition | Category | Place | Checked |
|---|---|---|---|---|
| 2025 | Errl Cup | Vape Pen Live Resin – Sativa | 3 | verified |
| 2024 | Oregon Growers Cup | Drinkable | 1 | verified |
| 2024 | Karma Cup | Sativa | 2 | verified |
| 2024 | Errl Cup | Concentrate – Sauce | 3 | verified |
| 2023 | High Times Cannabis Cup (United States) | Sativa Flower | 1 | verified |
| 2023 | High Times Cannabis Cup (United States) | Sativa Flower | 1 | verified |
| 2023 | Errl Cup | Sauce | 2 | verified |
| 2021 | 710 Degree Cup | FLOWER SATIVA | 2 | verified |
| 2021 | Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) | Sativa Vape | 3rd Place | verified |
| 2021 | Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) | Syringe | Winner | verified |
| 2020 | Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) | Disposable THC Dominant Vape Pen | 3rd Place | verified |
| 2020 | Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) | Syringe | WINNER | verified |
| 2020 | Highlife Cup (Netherlands) | Categorie H – Sativa (>70% Sativa-dominant) | 1 | unverified |
| 2019 | High Times Cannabis Cup (United States) | Sativa Flower | 3 | verified |
| 2018 | High Times Cannabis Cup (United States) | Best Sativa Concentrate | 2 | verified |
Award claims checked
30 confirmed · 27 year mismatch · 1 event ambiguous · 1 not in results · 57 unchecked. Only confirmed claims count as wins on the live card; every other verdict is shown in words beside the claim.
PICTURES, WITH CREDIT
68 pictures on record. Three shown, each with its source.
credit: seedfinder.eu · shown with credit copyright unverified
credit: seedfinder.eu · shown with credit copyright unverified
credit: seedfinder.eu · shown with credit copyright unverified
How to read this page
Every value is a stated claim with its sources. Where sources disagree all claims are listed. The lab range is the 10th to 90th percentile of flower lab samples and is shown only from 3 samples. Nothing is averaged across sources.
Aliases on record: 018NY6XC00VTC275ZNZZDF7T8T, 420-genetics/jack-herer, JH #12, JH #22, Jack Herer, baked-beans-cannabis-seeds/jack-herer, bc-bud-depot/jack-herer, best-coast-genetics/jack-herer, black-label/jack-herer, black-skull-seeds/jack-herer, bulk-seed-bank/jack-herer, bulk-seeds/jack-herer …. First listed by Serious Seeds. Observations on record: 72. Science links: 3453.
dossier jack-herer · frozen 2026-09-14 · citation score 248.9 · published by CannaLib, a Plausible Deniability project