CANNALIB · STRAIN DOSSIER · GRANDADDY PURPLE
Grandaddy Purple
2 independent sources put THC at 20 to 23%; 136 flower lab samples give a 10th to 90th percentile band of 12.7 to 25%; 4 recorded parents; 80 recorded descendants. It placed in results from Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) and Cowboy Cup Cannabis Championship.
Grandaddy Purple is a indica cannabis strain bred by Superbly Green. Lab tests put its THC between 12.7 and 25% (the middle 80% of 136 flower samples), with CBD around 0.1%. The terpenes most often reported are Linalool, alpha-Pinene, beta-Myrcene. Recorded parents: Big Bud × Granddaddy Purple × Purple Urkel × Purple Urkle. Stated flowering time 56 to 70 days. 2 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
20–23%
THC, most-agreed claim
2 independent sources
12.7–25%
Flower lab range
10th to 90th percentile of 136 samples
4
Recorded parents
with sources, never guessed
80
Recorded descendants
through stated parent links
1/2
Cup results, verified/total
placings found in published results
3
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 |
|---|---|---|
| 24% | 2 | cannareviews, cannlytics_expand |
| 25% | 2 | cannlytics_expand, cannabis_intelligence |
| 14.7% | 2 | or_prr00150, or_olcc_rich_enrich |
| 16.2% | 2 | or_prr00150, or_olcc_rich_enrich |
| 24.8% | 2 | or_prr00150, or_olcc_rich_enrich |
| 20 to 23% | 2 | cannabis_intelligence, seedcity_local |
| 0.3% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 0.4% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 0.5% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 1.1% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 0.2% | 1 | steep_hill_chemotypes_zenodo_3986252 |
| 1% | 1 | wa_wslcb_leaf_new |
Lab range 12.7 to 25% THC is the 10th to 90th percentile of 136 flower lab samples, median 19.2%; CBD 0 to 0.5% over 97 samples.
top terpenes by stated value: Linalool, alpha-Pinene, beta-Myrcene, Caryophyllene Oxide, alpha-Humulene, beta-Caryophyllene
345 chemistry rows on record. Flagged rows never used as potency: 118 non flower, 43 quality flagged, 0 percent outliers.
GROW CLAIMS
Height and flowering, as stated.
| Height | Independent sources | Who states it |
|---|---|---|
| 70 to 140 cm | 2 | seedcity, seedcity_local |
| 80 to 120 cm | 2 | seedcity, seedcity_local |
| 121 cm | 2 | seedcity, seedcity_local |
| 100 cm | 1 | seedfinder |
| 200 cm | 1 | seedfinder |
| 120 cm | 1 | cannabis_intelligence |
| Flowering | Independent sources | Who states it |
|---|---|---|
| 56 to 70 days | 3 | cannabis_intelligence, cropking, seedfinder |
| 74 days | 2 | truenorth, seedfinder |
| 56 to 63 days | 2 | seedcity, seedcity_local |
| 81 days | 2 | seedcity, seedcity_local |
| 63 days | 1 | seedfinder |
| 63 to 77 days | 1 | cropking |
| 70 days | 1 | seedfinder |
| 70 to 77 days | 1 | seedfinder |
LINEAGE
Recorded parents, and how many sources agree.
| Parent | Sources | Who states it |
|---|---|---|
| Big Bud | 1 | strain_fact:seedfinder |
| Granddaddy Purple | 1 | seedfinder |
| Purple Urkel | 1 | summary:parents |
| Purple Urkle | 1 | strain_fact:seedfinder |
80 descendants through recorded links, including Bubba Island Kush Seeds, Caf Racer Seeds Blimburn Seeds, Grandaddy Banner Seeds, Grandaddy Banner Seeds Alphafem Seeds, Grandaddy Black Seeds, Purple Punch Seeds Big Head Seeds, Purple Punch Seeds Seedstockers, Stoned Panda Seeds.
COMPETITIONS AND AWARD CLAIMS
Cup results with sources; claims with verdicts.
| Year | Competition | Category | Place | Checked |
|---|---|---|---|---|
| 2020 | Nevada Cannabis Awards Music Festival (Las Vegas Cannabis Awards; Nevada CAMF) | Disposable THC Dominant Vape Pen | 2nd Place | verified |
| 2019 | Cowboy Cup Cannabis Championship | DISTILLATE | 1st | unverified |
No seed-bank award claims on record.
PICTURES, WITH CREDIT
3 pictures on record. Three shown, each with its source.
credit: cropkingseeds.com · shown with credit, copyright unverified
credit: lasvegascannabisawardsmusicfestival.com · shown with credit, copyright unverified
credit: cropkingseeds.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: grandaddy-purple, nirvana-seeds/grandaddy-purple, seeds66/grandaddy-purple, grandaddy purple autoflowering feminized seeds bulk seeds, grandaddy purple autoflowering feminized seeds canuk seeds, grandaddy purple autoflowering feminized seeds merica seeds, grandaddy purple feminized seeds bulk seeds, grandaddy purple feminized seeds canuk seeds
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dossier grandaddy-purple · frozen 2026-09-29 · published by CannaLib, a Plausible Deniability project · Cite as: CannaLib (2026). Grandaddy Purple strain dossier. https://cannalib.org/strains/grandaddy-purple/