CANNALIB · STRAIN DOSSIER · JACK THE RIPPER
Jack the Ripper
2 independent sources put THC at 17%; 464 flower lab samples give a 10th to 90th percentile band of 10.2 to 22.7%; 3 recorded parents; 102 recorded descendants. It placed in results from Spannabis Champions Cup, Errl Cup and Karma Cup.
Jack the Ripper is a sativa dominant hybrid cannabis strain bred by Hbk Genetics. Lab tests put its THC between 10.2 and 22.7% (the middle 80% of 464 flower samples), with CBD around 0.1%. The terpenes most often reported are Linalool, alpha-Humulene, Caryophyllene Oxide. Recorded parents: Jack S Cleaner × Jacks Cleaner × Space Queen. Stated flowering time 56 to 63 days. 3 cup placings on record, 3 verified against published results.
● frozen 2026-09-29 · API 0.7.1-stdlib
● evidence bar: thc 2 independent sources
● type: sativa dominant hybrid
17%
THC, most-agreed claim
2 independent sources
10.2–22.7%
Flower lab range
10th to 90th percentile of 464 samples
3
Recorded parents
with sources, never guessed
102
Recorded descendants
through stated parent links
3/3
Cup results, verified/total
placings found in published results
8
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 |
|---|---|---|
| 17% | 2 | leafly_flat, leafly_flat_enrich, medical_effects |
| 12.7% | 2 | or_prr00150, maxvalue_terpenes_csv |
| 17.6% | 2 | or_prr00150, replication_data |
| 22.2% | 2 | replication_data, smith_phytochem_sample |
| 0.4% | 1 | wa_wslcb_leaf_new |
| 1.2% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 1.6% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 1.8% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 0.1% | 1 | cannlytics_expand |
| 0.3% | 1 | wa_wslcb_leaf_new |
| 0.4% | 1 | wa_wslcb_leaf_new |
| 0.7% | 1 | wa_wslcb_leaf_new |
Lab range 10.2 to 22.7% THC is the 10th to 90th percentile of 464 flower lab samples, median 17.1%; CBD 0 to 0.3% over 280 samples.
top terpenes by stated value: Linalool, alpha-Humulene, Caryophyllene Oxide, beta-Caryophyllene, beta-Myrcene, alpha-Pinene
879 chemistry rows on record. Flagged rows never used as potency: 95 non flower, 122 quality flagged, 0 percent outliers.
GROW CLAIMS
Height and flowering, as stated.
| Height | Independent sources | Who states it |
|---|---|---|
| 80 to 120 cm | 2 | seedcity, seedcity_local |
| Flowering | Independent sources | Who states it |
|---|---|---|
| 56 to 63 days | 3 | cannaconnection, seedcity, seedcity_local |
| 55 to 60 days | 1 | alchimia, master |
| 56 days | 1 | alchimia, master |
| 70 to 98 days | 1 | alchimia, master |
| 63 days | 1 | seedfinder |
LINEAGE
Recorded parents, and how many sources agree.
| Parent | Sources | Who states it |
|---|---|---|
| Jack S Cleaner | 1 | strain_fact:alchimia,master |
| Jacks Cleaner | 1 | strain_fact:alchimia,master,seedfinder |
| Space Queen | 1 | strain_fact:alchimia,master,seedfinder |
102 descendants through recorded links, including Ace Of Spades, Adam Jtr, Agent Lemon, Agent Orange, Banana Jack Og, Black Widow Ripper, Blueberry Butcher, Butt Head.
COMPETITIONS AND AWARD CLAIMS
Cup results with sources; claims with verdicts.
| Year | Competition | Category | Place | Checked |
|---|---|---|---|---|
| 2020 | Errl Cup | FLOWER SATIVA | 3rd | verified |
| 2017 | Spannabis Champions Cup | Sativas | 2nd | verified |
| 2017 | Karma Cup | BUD – (Sativa) | 5th | verified |
Award claims checked 0 confirmed · 3 unchecked. Only confirmed claims count as results.
| Claim | Year | Source | Verdict |
|---|---|---|---|
| High Times | not stated | hytiva | event_ambiguous |
| 2006 Cannabis Cup. * Phenotypes: Moderately stable with heavy Jacks Cleaner traits. * | 2006 | seedfinder | not_in_results |
| Top 10 Strain | 2006 | 2006 | archive.org | unchecked |
PICTURES, WITH CREDIT
8 pictures on record. Three shown, each with its source.
credit: cannaconnection.com · shown with credit, copyright unverified
credit: allbud.s3.amazonaws.com · shown with credit, copyright unverified
credit: images.hytiva.com · 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 never blended with seed-bank claims. Parents are recorded links, never guessed. Pictures are shown with their source and credit; copyright is unverified. Nothing on this page was invented, averaged across sources or merged from another name.
Aliases on record: Jack The Ripper, subcools-the-dank/jack-the-ripper, 2-guns-and-a-guy-seed-company/jack-the-ripper, 018NY6XC00VTZJHRHREFBA6A4A, JackTheRipper
Live card in the explorer → · Machine-readable record (API) → · Honesty rules →
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dossier jack-the-ripper · frozen 2026-09-29 · published by CannaLib, a Plausible Deniability project · Cite as: CannaLib (2026). Jack the Ripper strain dossier. https://cannalib.org/strains/jack-the-ripper/