CANNALIB · STRAIN DOSSIER · GRAND DADDY PURPLE
Grand Daddy Purple
2 independent sources put THC at 19.1%; 992 flower lab samples give a 10th to 90th percentile band of 9.7 to 24.1%; 3 recorded parents; 159 recorded descendants. It placed in results from High Times Cannabis Cup (United States), Errl Cup and Jack Herer Cup.
Grand Daddy Purple is a indica dominant hybrid cannabis strain bred by Delta 9 Labs. Lab tests put its THC between 9.7 and 24.1% (the middle 80% of 992 flower samples), with CBD around 0.1%. The terpenes most often reported are terpinolene, β-myrcene, β-ocimene. Recorded parents: Big Bud × Purple Urkel × Purple Urkle. Stated flowering time 56 to 70 days. 4 cup placings on record, 1 verified against published results.
● frozen 2026-09-29 · API 0.7.1-stdlib
● evidence bar: thc 2 independent sources
● type: indica dominant hybrid
19.1%
THC, most-agreed claim
2 independent sources
9.7–24.1%
Flower lab range
10th to 90th percentile of 992 samples
3
Recorded parents
with sources, never guessed
159
Recorded descendants
through stated parent links
1/4
Cup results, verified/total
placings found in published results
10
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% | 2 | cannlytics_expand, replication_data |
| 17% | 2 | allbud, replication_data, master |
| 15.1% | 2 | cannlytics_expand, maxvalue_terpenes_csv |
| 16.3% | 2 | replication_data, cannlytics_expand |
| 17.3% | 2 | or_prr00150, replication_data |
| 17.3% | 2 | cannlytics_expand, or_prr00150 |
| 17.4% | 2 | cannlytics_expand, maxvalue_terpenes_csv |
| 17.6% | 2 | or_prr00150, replication_data |
| 19.1% | 2 | or_prr00150, or_olcc_rich_enrich |
| 19.3% | 2 | or_prr00150, or_olcc_rich_enrich |
| 19.4% | 2 | or_prr00150, or_olcc_rich_enrich |
| 19.6% | 2 | or_prr00150, or_olcc_rich_enrich |
Lab range 9.7 to 24.1% THC is the 10th to 90th percentile of 992 flower lab samples, median 18.6%; CBD 0 to 0.4% over 806 samples.
top terpenes by stated value: terpinolene, β-myrcene, β-ocimene, β-pinene, limonene, β-caryophyllene
2,119 chemistry rows on record. Flagged rows never used as potency: 411 non flower, 139 quality flagged, 1 percent outliers.
GROW CLAIMS
Height and flowering, as stated.
| Height | Independent sources | Who states it |
|---|---|---|
| 80 to 120 cm | 2 | seedcity, seedcity_local |
| 91 cm | 1 | seedfinder |
| 244 cm | 1 | seedfinder |
| Flowering | Independent sources | Who states it |
|---|---|---|
| 63 days | 3 | seedfinder, seedcity, seedcity_local |
| 56 to 70 days | 3 | seedcity, seedcity_local, seedfinder |
| 60 days | 1 | seedfinder |
| 56 to 63 days | 1 | seedfinder |
LINEAGE
Recorded parents, and how many sources agree.
| Parent | Sources | Who states it |
|---|---|---|
| Big Bud | 1 | seedfinder |
| Purple Urkel | 1 | seedfinder:parents |
| Purple Urkle | 1 | strain_fact:seedfinder |
159 descendants through recorded links, including Banana Daddy R1, Dieselicious Seeds, American Cincinnatus, American Purple, Auto Grand Daddy Purple Xxl, Banana Daddy, Bayou Royal Grapes, Big Auto Paxa.
COMPETITIONS AND AWARD CLAIMS
Cup results with sources; claims with verdicts.
| Year | Competition | Category | Place | Checked |
|---|---|---|---|---|
| 2022 | Errl Cup | VAPE PEN - INDICA | 3rd | unverified |
| 2021 | Jack Herer Cup | Greenhouse Flower – Indica | winner | unverified |
| 2017 | Jack Herer Cup | Vape Pen Cartridge – Indica | winner | unverified |
| 2014 | High Times Cannabis Cup (United States) | BEST US INDICA | 2nd | verified |
Award claims checked 1 confirmed · 6 unchecked. Only confirmed claims count as results.
| Claim | Year | Source | Verdict |
|---|---|---|---|
| Cannabis Cup | not stated · matched 2014 | seedfinder | confirmed |
| Cannabis Cup | not stated | hytiva | event_ambiguous |
| second place | second place | Santa Cruz Cup | 2018 | 2018 | archive.org | unchecked |
| winning | Highest CBD Trophy | Medical Cannabis Cup | 2015 | 2015 | runner:brain-data-staging-book-cannabis- | unchecked |
| Highest CBD Trophy | Medical Cannabis Cup | 2015 | 2015 | runner:brain-data-staging-book-high-time | unchecked |
| Highest lab-tested THC at a HT Cannabis Cup | HT Cannabis Cup | 2012 | 2012 | archive.org | unchecked |
| Green Cup | not stated | seedfinder | unchecked |
PICTURES, WITH CREDIT
10 pictures on record. Three shown, each with its source.
credit: seedsmanlive.gumlet.io · shown with credit, copyright unverified
credit: seedsmanlive.gumlet.io · 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 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: grand-daddy-purple, atlas-seed/grand-daddy-purple, concrete-jungle-seeds/grand-daddy-purple, unknown-or-legendary/grand-daddy-purple, granddaddypurple, 018NY6XC00VTZXGJ5XG8ZXSF6K
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dossier grand-daddy-purple · frozen 2026-09-29 · published by CannaLib, a Plausible Deniability project · Cite as: CannaLib (2026). Grand Daddy Purple strain dossier. https://cannalib.org/strains/grand-daddy-purple/