The Official Cannabis Independent strain guides
The Official Cannabis collection · sheet 08No 08 · Green Crackvs Jack Herer

Comparison

Green Crack vs Jack Herer

Leafly users describe both as energetic and focused; the differences are lineage and terpenes. Leafly says Sensi Seeds created Jack Herer by combining a Haze hybrid with a Northern Lights #5 and Shiva Skunk cross.1,2 In state lab tests the two land close together: 19.52% median THC for Green Crack and 19.59% for Jack Herer.3 In our terpene data, Green Crack leads with β-myrcene and Jack Herer with terpinolene.3

Side by side

Green CrackJack Herer
TypeSativa1Sativa-dominant2
LineageSkunk #1 × unknown indica (Weedmaps: × Afghani)1,4A Haze hybrid × a Northern Lights #5 and Shiva Skunk cross (Sensi Seeds)2
Median THC (state lab tests)19.52% (1,236 tests)19.59% (910 tests)
Middle half of THC results16.79%–21.73%17.13%–22.00%
Top terpenes (median)β-Myrcene, β-Caryophyllene, α-Humulene (167 tests)Terpinolene, β-Caryophyllene, α-Humulene (413 tests)
Top effects (Leafly)Energetic, focused, talkative1Focused, energetic, creative2
FlavorCitrus, mango, earthy1Pine, woody, earthy2
Flowering7–9 weeks150–70 days2

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

Lab-tested THC: Green Crack vs Jack Herer

16% 18% 20% 22% Jack Herer Jack Herer: median 19.59%, middle half 17.13%–22.00%, 910 tests 19.6% n=910 Green Crack Green Crack: median 19.52%, middle half 16.79%–21.73%, 1,236 tests 19.5% n=1,236 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests.3

More comparisons

Sources

  1. Leafly, Green Crack strain information. Accessed Oct 3, 2026.
  2. Leafly, Jack Herer strain information. Accessed Oct 3, 2026.
  3. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 3, 2026.
  4. Weedmaps, Green Crack strain page. Accessed Oct 3, 2026.