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

Comparison

Granddaddy Purple vs Purple Urkle

Most sources list Purple Urkle as one of Granddaddy Purple’s two parents, crossed with Big Bud; Leafly’s strain page names Mendo Purps instead, the strain Purple Urkle is believed to come from.1,2,3,4 Leafly users give both the same top effects, sleepy, relaxed and hungry, and a grape-led flavor.3,4 Purple Urkle’s lab sample is small, only 35 tests, with a median THC of 19.00% against 17.87% for Granddaddy Purple (512 tests).5

Side by side

Granddaddy PurplePurple Urkle
TypeIndica (Leafly, Weedmaps); 70% indica per AllBud1,2,3Indica4
LineagePurple Urkle × Big Bud in most accounts; Mendo Purps × Skunk × Afghanistan per Leafly1,2,3Believed to be a select phenotype of Mendocino Purps4
Median THC (state lab tests)17.87% (512 tests)19.00% (35 tests); small sample
Middle half of THC results15.00%–21.55%15.98%–22.42%
Top terpenes (median)Limonene, β-Caryophyllene, β-Myrcene (55 tests)Too few tests report individual terpenes
Leafly top effectsSleepy, relaxed, hungry3Sleepy, relaxed, hungry4
FlavorGrape, berry, violet3Grape, plum, berry4
Leafly ratings5,72731,3464

Lab rows come from the same state lab dataset and matching rules for both strains.5

Lab-tested THC: Granddaddy Purple vs Purple Urkle

14% 16% 18% 20% 22% 24% Purple Urkle Purple Urkle: median 19.00%, middle half 15.98%–22.42%, 35 tests 19.0% n=35 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. Small sample: Purple Urkle has only 35 tests.5

Which is easier to find

In Weedmaps snapshots from Oct 4, 2026 (Granddaddy Purple) and Oct 3, 2026 (Purple Urkle), 56 stores within 50 miles of Los Angeles listed Granddaddy Purple flower on Weedmaps, against 10 stores for Purple Urkle; around New York the counts were 58 and 4.6

Its own site

Purple Urkle has its own guide in the Official Cannabis network at purpleurkle.com, which looks at the parent question from the other side.

More comparisons

Sources

  1. Weedmaps, Granddaddy Purple strain page. Accessed Oct 4, 2026.
  2. AllBud, Granddaddy Purple marijuana strain information and reviews. Accessed Oct 4, 2026.
  3. Leafly, Granddaddy Purple (aka GDP) strain information. Accessed Oct 4, 2026.
  4. Leafly, Purple Urkle strain information. Accessed Oct 4, 2026.
  5. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  6. 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.