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FAQ

Granddaddy Purple: frequently asked questions

Short answers to the questions people search most about Granddaddy Purple, each with its sources.

Is Granddaddy Purple indica or sativa?

An indica: Leafly and Weedmaps classify it as one, AllBud lists 70% indica, and seed versions are sold as 75–80% indica.1,2,3,4,5

What strain is GDP? What does GDP stand for?

GDP stands for Granddaddy Purple; Leafly, Weedmaps and AllBud all list the initials among its names, along with Grand Daddy Purp and Granddaddy Purps.1,2,3

Who created Granddaddy Purple?

Ken Estes popularized it in 2003 and launched it in Oakland; he told Leafly it began as a plant called Purple Medicine that the Pomo had up in Humboldt.1,2,6

What two strains make Granddaddy Purple?

Most sources say Purple Urkle and Big Bud; Leafly’s strain page says Mendo Purps, Skunk and Afghanistan, and notes the Purple Urkle × Big Bud claim.1,2,3,4

What is Ken’s GDP?

Ken Estes’s own cut and seed line: Leafly’s Purps history uses the name for the version Estes popularized, and SeedFinder lists his Grand Daddy Purp as regular seeds only.7,8 In our lab data, 20 tests carry the “Ken’s” prefix.9

Is Granddaddy Purple the same as Grape Ape?

No, but the sources overlap: Leafly gives both the same three parents, and the Apothecary text on SeedFinder lists Grape Ape among GDP’s phenotype names (see the comparison).1,10,11

How much THC is in Granddaddy Purple?

The median is 17.87% across 512 state lab tests; half of all results fall between 15.00% and 21.55%, and 53 of the other 57 strains we track have a higher median.9

What terpenes are in Granddaddy Purple?

By median in our lab data, limonene 0.24%, β-caryophyllene 0.21%, β-myrcene 0.14% (percent by weight), from 55 tests, 45 of them Nevada’s; Leafly’s profile lists myrcene first.1,9

Does Granddaddy Purple have CBD?

Very little: 287 of the 439 tests that reported CBD found none, and 2 reached 1% or more.9 Leafly lists 0% CBD.1

What does Granddaddy Purple taste like?

Mostly grape and berry: Weedmaps users report grape (49%), berry (31%) and spicy or herbal (20%), and Leafly users list grape, berry and violet.1,2

Does Granddaddy Purple make you sleepy?

It is known as a sleepy strain: sleepy is the top effect on Leafly, which rates it mostly calming, and Weedmaps describes a high that settles into deep relaxation and sleepiness.1,2

Why is Granddaddy Purple purple? Is it always purple?

The color comes from anthocyanin pigments, which some strains carry more of and which cold can bring out; Leafly says GDP usually shows deep purples and lavenders, but its Purps history adds that sometimes even Granddaddy Purple doesn’t come out purple.7,12

How long does Granddaddy Purple take to flower?

About 55–65 days indoors in most listings (Royal Queen Seeds, Leafly, Weedmaps); Ken Estes’s regular seeds and United Cannabis Seeds’ version are listed at about 77 and 80 days.1,2,4,5,8

Where can I find Granddaddy Purple?

Weedmaps showed it most often around New York: on Oct 4, 2026, 58 stores within 50 miles listed the flower, out of 182 store listings across 27 US markets (see where to find it).13

Sources

  1. Leafly, Granddaddy Purple (aka GDP) strain information. Accessed Oct 4, 2026.
  2. Weedmaps, Granddaddy Purple strain page. Accessed Oct 4, 2026.
  3. AllBud, Granddaddy Purple marijuana strain information and reviews. Accessed Oct 4, 2026.
  4. Royal Queen Seeds, Granddaddy Purple feminized seeds (data sheet). Accessed Oct 4, 2026.
  5. SeedFinder, Granddaddy Purple (United Cannabis Seeds): strain info. Accessed Oct 4, 2026.
  6. Leafly, Meet the daddy of Granddaddy Purple (Lindsay MaHarry) (2026-07-21). Accessed Oct 4, 2026.
  7. Leafly, Pleased as Purple Punch: a ‘Purps’ family genealogy (Amelia Williams) (2021-04-08). Accessed Oct 4, 2026.
  8. SeedFinder, Grand Daddy Purp (Grand Daddy Purp): strain info, cannabinoids and genealogy. Accessed Oct 4, 2026.
  9. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  10. Leafly, Grape Ape strain information. Accessed Oct 4, 2026.
  11. SeedFinder, Grand Daddy Purple (Unknown or Legendary): strain info and Apothecary breeder description. Accessed Oct 4, 2026.
  12. Leafly, How does cannabis get its color? Here's why some strains turn purple (Bailey Rahn) (2020-07-28). Accessed Oct 4, 2026.
  13. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 4, 2026. Accessed Oct 4, 2026. Latest capture Oct 4, 2026.