The Official Cannabis Independent strain guides
Granddaddy Purple No 17 Shop
The Official Cannabis collection · sheet 17No 17 · Granddaddy Purplevs OG Kush

Comparison

Granddaddy Purple vs OG Kush

OG Kush is a hybrid first cultivated in Florida in the early 1990s, with Chemdawg, Lemon Thai and a Hindu Kush plant among its reputed parents. Leafly users report the same three top effects for both, in a different order, and different flavors: woody and pine against grape and berry.1,2 In state labs OG Kush tests higher: 20.87% median THC against 17.87% for Granddaddy Purple.3

Side by side

Granddaddy PurpleOG Kush
TypeIndica (Leafly, Weedmaps); 70% indica per AllBud2,4,5Hybrid1
LineagePurple Urkle × Big Bud in most accounts; Mendo Purps × Skunk × Afghanistan per Leafly2,4,5Chemdawg × Hindu Kush, with Lemon Thai also named1
Median THC (state lab tests)17.87% (512 tests)20.87% (379 tests)
Middle half of THC results15.00%–21.55%18.06%–23.36%
Top terpenes (median)Limonene, β-Caryophyllene, β-Myrcene (55 tests)β-Caryophyllene, Limonene, β-Myrcene (127 tests)
Leafly top effectsSleepy, relaxed, hungry2Hungry, relaxed, sleepy1
FlavorGrape, berry, violet2Woody, pine, earthy1
Flowering7–9 weeks (Leafly); about 65 days indoors (Weedmaps)2,4About 56 days (Leafly)1

Lab rows come from the same state lab dataset and matching rules for both strains.3

Lab-tested THC: Granddaddy Purple vs OG Kush

14% 16% 18% 20% 22% 24% OG Kush OG Kush: median 20.87%, middle half 18.06%–23.36%, 379 tests 20.9% n=379 Granddaddy Purple Granddaddy Purple: median 17.87%, middle half 15.00%–21.55%, 512 tests 17.9% n=512 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests.3

Crossed with each other

Breeders have combined the two more than once: Leafly lists God’s Gift and Grandpa’s Breath, the second from Dungeons Vault Genetics, as crosses of Granddaddy Purple and OG Kush, and Purple Punch’s other parent, Larry OG, is OG Kush × SFV OG.6,7,8,9 Chemdawg, one of OG Kush’s reputed parents, has its own guide in the Official Cannabis network at chemdawg.com.

More comparisons

Sources

  1. Leafly, OG Kush strain information. Accessed Oct 4, 2026.
  2. Leafly, Granddaddy Purple (aka GDP) strain information. Accessed Oct 4, 2026.
  3. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  4. Weedmaps, Granddaddy Purple strain page. Accessed Oct 4, 2026.
  5. AllBud, Granddaddy Purple marijuana strain information and reviews. Accessed Oct 4, 2026.
  6. Leafly, Leafly’s 100 best weed strains of all time (2026-07-14). Accessed Oct 4, 2026.
  7. Leafly, Grandpa’s Breath strain information. Accessed Oct 4, 2026.
  8. Leafly, Larry OG strain information. Accessed Oct 4, 2026.
  9. Leafly, Purple Punch strain information. Accessed Oct 4, 2026.