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

Comparison

Granddaddy Purple vs Blue Dream

They were the two best sellers in Leafly’s 2025 dispensary orders, Blue Dream first and Granddaddy Purple second, and they sit at opposite ends of Leafly’s calming-to-energizing scale: Granddaddy Purple is a sleepy indica, Blue Dream a creative, mostly energizing Blueberry × Haze hybrid.1,2,3 In state labs Blue Dream tests higher: 19.96% median THC against 17.87% for Granddaddy Purple.4

Side by side

Granddaddy PurpleBlue Dream
TypeIndica, rated mostly calming2Hybrid, rated mostly energizing3
LineagePurple Urkle × Big Bud in most accounts; Mendo Purps × Skunk × Afghanistan per Leafly2,5,6Blueberry × Haze3
Median THC (state lab tests)17.87% (512 tests)19.96% (2,118 tests)
Middle half of THC results15.00%–21.55%17.62%–22.37%
Top terpenes (median)Limonene, β-Caryophyllene, β-Myrcene (55 tests)β-Myrcene, α-Pinene, β-Caryophyllene (483 tests)
Leafly top effectsSleepy, relaxed, hungry2Creative, euphoric, happy3
FlavorGrape, berry, violet2Berry, blueberry, sweet3
Leafly orders, 2025#21#11

Lab rows come from the same state lab dataset and matching rules for both strains.4

Lab-tested THC: Granddaddy Purple vs Blue Dream

14% 16% 18% 20% 22% 24% Blue Dream Blue Dream: median 19.96%, middle half 17.62%–22.37%, 2,118 tests 20.0% n=2,118 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.4

Which is easier to find

In Weedmaps snapshots from Oct 4, 2026 (Granddaddy Purple) and Oct 3, 2026 (Blue Dream), 56 stores within 50 miles of Los Angeles listed Granddaddy Purple flower on Weedmaps, against 293 stores for Blue Dream; around New York the counts were 58 and 129.7

Its own site

Blue Dream has its own guide in the Official Cannabis network at bluedream.com.

More comparisons

Sources

  1. Leafly, The best-selling weed strains of 2025 (2026-02-02). Accessed Oct 4, 2026.
  2. Leafly, Granddaddy Purple (aka GDP) strain information. Accessed Oct 4, 2026.
  3. Leafly, Blue Dream strain information. Accessed Oct 4, 2026.
  4. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  5. Weedmaps, Granddaddy Purple strain page. Accessed Oct 4, 2026.
  6. AllBud, Granddaddy Purple marijuana strain information and reviews. Accessed Oct 4, 2026.
  7. 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.