The Official Cannabis Independent strain guides
Critical Jack No 10 Shop
The Official Cannabis collection · sheet 10No 10 · Critical Jackvs Blue Dream

Comparison

Critical Jack vs Blue Dream

Both are sativa-leaning hybrids with Haze in the family, but one is a Spanish seed-bank strain with only eight tests in US labs and the other the best-selling strain in the country, with 2,118 tests.1,2,3,4 Blue Dream tests higher: 19.96% median THC against 15.01% for Critical Jack.4

Side by side

Critical JackBlue Dream
TypeSativa-leaning hybrid; Dinafem lists 60% sativa / 40% indica1,5Sativa-dominant hybrid2
LineageCritical+ × Jack Herer (Dinafem Seeds, Spain)1,6Blueberry × Haze (California)2
Median THC (state lab tests)15.01% (only eight tests, a small sample)19.96% (2,118 tests)
Middle half of THC results13.41%–20.68%17.62%–22.37%
Top terpenes (median)Too few tests for a profile (1 of 8 with terpene values)β-Myrcene, α-Pinene, β-Caryophyllene (483 tests)
Leafly top effectsFocused, energetic, uplifted5Creative, euphoric, happy2
FlavorPine, citrus, lemon5Berry, blueberry, sweet2
Leafly orders, 2025Not ranked3#13

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

Lab-tested THC: Critical Jack vs Blue Dream

12% 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 Critical Jack Critical Jack: median 15.01%, middle half 13.41%–20.68%, 8 tests 15.0% n=8 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests. Small sample: Critical Jack has only 8 tests.4

Which is easier to find

On Oct 3, 2026, no stores within 50 miles of Los Angeles listed Critical Jack flower on Weedmaps, against 293 stores for Blue Dream; around New York the counts were 0 and 129.7

Its own site

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

More comparisons

Sources

  1. Dinafem Seeds, Critical Jack: feminized seeds, specifications, lab analysis and awards. Accessed Oct 3, 2026.
  2. Leafly, Blue Dream strain information. Accessed Oct 3, 2026.
  3. Leafly, The best-selling weed strains of 2025 (2026-02-02). Accessed Oct 3, 2026.
  4. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 3, 2026.
  5. Leafly, Critical Jack aka Critical Jack Herer strain information. Accessed Oct 3, 2026.
  6. Weedmaps, Critical Jack strain page. Accessed Oct 3, 2026.
  7. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 3, 2026. Accessed Oct 3, 2026.