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G13 Haze No 13 Shop
The Official Cannabis collection · sheet 13No 13 · G13 Hazevs G13

Comparison

G13 Haze vs G13

G13 is the parent: an indica that Leafly rates mostly calming, with sleepy as its top effect, where G13 Haze is rated mostly energizing and reported as euphoric and giggly.1,2 In state labs G13 tests higher: 24.17% median THC across 97 tests, against 20.30% for G13 Haze from only 14 tests, a small sample.3

Side by side

G13 HazeG13
TypeSativa-dominant hybrid; 80/20 per Barney’s Farm4,5Indica1,6
LineageG13 × Hawaiian Sativa (Barney’s Farm); G13 × Haze (Leafly)2,4Unknown; Weedmaps lists Afghani × Afghani, Sensi Seeds calls it an Afghani plant6,7
Median THC (state lab tests)20.30% (14 tests); small sample24.17% (97 tests)
Middle half of THC results19.98%–21.86%16.40%–27.43%
Top terpenes (median)Too few tests for a profile (2 of 14 with terpene values)Limonene, β-Myrcene, β-Caryophyllene (56 tests)
Leafly top effectsEuphoric, happy, giggly2Sleepy, euphoric, relaxed1
FlavorPepper, pine, sage2Earthy, pine, woody1
Flowering65–70 days (Barney’s Farm, feminized)47–9 weeks (Leafly); 55–65 days for modern lines (Weedmaps)1,6

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

Lab-tested THC: G13 Haze vs G13

16% 20% 24% 28% G13 G13: median 24.17%, middle half 16.40%–27.43%, 97 tests 24.2% n=97 G13 Haze G13 Haze: median 20.30%, middle half 19.98%–21.86%, 14 tests 20.3% n=14 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; G13 has only 97 tests.3

Different strains, counted separately

In state lab records the two never overlap: 14 strictly matched flower tests of G13 Haze against 97 of G13, whose middle half runs 16.40%–27.43% against 19.98%–21.86% for G13 Haze.3 Among the 117 near-miss results excluded from G13’s own count were 18 labeled "G13 × Hawaiian Sativa Trim", the cross Barney’s Farm names for G13 Haze, sold as trim under the parents’ names.3,4 Leafly shows 1,224 reviews for G13 and 222 for G13 Haze.1,2

The legend they share

Both names trade on the story that G13 was bred in a US government program at the University of Mississippi and liberated by a technician. High Times states it as fact, Leafly says “according to some accounts”, and Weedmaps says almost none of it can be proven; the earliest dated version is Neville’s 1987 catalog, which says “reputedly” (see history).1,6,8,9

More comparisons

Sources

  1. Leafly, G13 (G-13) 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. Weedmaps, G-13 (aka Government Indica Strain 13) strain page. Accessed Oct 3, 2026.
  7. Sensi Seeds, Mr Nice G13 x Hash Plant regular seeds. Accessed Oct 3, 2026.
  8. High Times, 25 greatest strains of all time (Nico Escondido) (2014-10-09). Accessed Oct 3, 2026.
  9. SeedFinder, G-13 (Unknown or Legendary): strain info, with Neville’s 1987 catalog text. Accessed Oct 3, 2026.