CANNALIB · STRAIN DOSSIER · GRANDADDY PURPLE
Grandaddy Purple
2 independent sources put THC at 24%; 117 flower lab samples give a 10th to 90th percentile band of 15.289 to 24.958%; 4 recorded parents; 80 recorded descendants. It placed Cowboy Cup Cannabis Championship.
● frozen 2026-09-14 · API 0.7.0-stdlib
● evidence bar: flower lab range 3 samples
● type: indica
24%
THC, most-agreed claim
2 independent sources
15.289–24.958%
Flower lab range
10th to 90th percentile of 117 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 |
| 20 to 23% | 2 | cannabis_intelligence, seedcity_local |
| 7.8899% | 1 | replication_data |
| 11.61% | 1 | maxvalue_terpenes |
| 12.6563% | 1 | replication_data |
| 12.7701% | 1 | cannlytics_expand |
| 14.115% | 1 | maxvalue_terpenes_csv |
| 14.67% | 1 | or_prr00150 |
| 14.7411% | 1 | replication_data |
2 more THC claims are on the live card.
Lab range 15.289 to 24.958% THC is the 10th to 90th percentile of 117 flower lab samples (median 19.8). CBD 0 to 0.388% over 81 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: Linalool, alpha-Pinene, beta-Myrcene, Caryophyllene Oxide, alpha-Humulene, beta-Caryophyllene, Terpinolene, beta-Ocimene
217 chemistry rows on record. Flagged rows never used as potency: 41 non flower, 43 quality flagged.
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 |
| 120.091 cm | 1 | cannabis_intelligence |
| Flowering | Independent sources | Who states it |
|---|---|---|
| 56 to 70 days | 3 | cannabis_intelligence, cropking, seedfinder |
| 56 to 63 days | 2 | seedcity, seedcity_local |
| 74 days | 2 | truenorth, seedfinder |
| 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 |
|---|---|---|
| Granddaddy Purple | 1 | seedfinder |
| Purple Urkel | 1 | summary:parents |
| Big Bud low confidence | 1 | strain_fact:seedfinder |
| Purple Urkle low confidence | 1 | strain_fact:seedfinder |
80 descendants through recorded links, including Bubba Island Kush Seeds, Café 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. 7 sub-varieties and 0 phenotypes or cuts are linked to this cultivar.
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 |
Award claims checked
2 unchecked. Only confirmed claims count as wins on the live card; every other verdict is shown in words beside the claim.
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 shown only from 3 samples. Nothing is averaged across sources.
Aliases on record: 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, grandaddy-purple, nirvana-seeds/grandaddy-purple, seeds66/grandaddy-purple. First listed by Superbly Green. Observations on record: 16. Science links: 206.
dossier grandaddy-purple · frozen 2026-09-14 · citation score 53.7 · published by CannaLib, a Plausible Deniability project