The Official Cannabis Independent strain guides
G13 Haze No 13 Shop
The Official Cannabis collection · sheet 13No 13 · G13 Hazevs Jack Herer

Comparison

G13 Haze vs Jack Herer

Both are Haze hybrids from Amsterdam seed companies: Jack Herer, a Sensi Seeds sativa from the mid-1990s that users call focused and energetic, and G13 Haze, Barney’s Farm’s cross reported as euphoric and giggly.1,2 Jack Herer tests about the same in state labs: 19.59% median THC across 910 tests, against 20.30% for G13 Haze from only 14 tests, a small sample.3

Side by side

G13 HazeJack Herer
TypeSativa-dominant hybrid; 80/20 per Barney’s Farm4,5Sativa1
LineageG13 × Hawaiian Sativa (Barney’s Farm); G13 × Haze (Leafly)2,4A Haze hybrid × (Northern Lights #5 × Shiva Skunk), Sensi Seeds, mid-1990s1
Median THC (state lab tests)20.30% (14 tests); small sample19.59% (910 tests)
Middle half of THC results19.98%–21.86%17.13%–22.00%
Top terpenes (median)Too few tests for a profile (2 of 14 with terpene values)Terpinolene, β-Caryophyllene, α-Humulene (413 tests)
Leafly top effectsEuphoric, happy, giggly2Focused, energetic, creative1
FlavorPepper, pine, sage2Pine, woody, earthy1
Flowering65–70 days (Barney’s Farm, feminized)450–70 days1

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

Lab-tested THC: G13 Haze vs Jack Herer

16% 18% 20% 22% G13 Haze G13 Haze: median 20.30%, middle half 19.98%–21.86%, 14 tests 20.3% n=14 Jack Herer Jack Herer: median 19.59%, middle half 17.13%–22.00%, 910 tests 19.6% n=910 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests. Small sample: G13 Haze has only 14 tests.3

A shared offspring: XJ-13

The two have been crossed. Leafly lists XJ-13 as Jack Herer × G13 Haze, a terpinolene-led hybrid with 1,007 ratings; High Times instead says G-13 “was recently crossed with a Jack Herer male to produce the newly popular XJ-13”, so whether the parent was G13 or G13 Haze is itself disputed.6,7

More comparisons

Sources

  1. Leafly, Jack Herer strain information. Accessed Oct 3, 2026.
  2. Leafly, G13 Haze 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. Barney’s Farm, G13 Haze: feminized seed specifications. Accessed Oct 3, 2026.
  5. AllBud, G13 Haze marijuana strain information and reviews. Accessed Oct 3, 2026.
  6. Leafly, XJ-13 strain information. Accessed Oct 3, 2026.
  7. High Times, 25 greatest strains of all time (Nico Escondido) (2014-10-09). Accessed Oct 3, 2026.