G13 Haze by Barneys Farm
2 other breeders' versions of G13 Haze — compare flowering times side by side →
There's a lot of myth and bullshit surrounding the origins of G13, with old heads swearing it was bred in a secret government facility in Mississippi during the 70s. Whether you buy into the CIA folklore or not, there's no denying that the original G13 was a devastatingly potent, heavy-hitting indica. The mad scientists at Barney's Farm got their hands on it and decided to flip the script entirely. They took this mythical Afghan chunk and crossed it with a soaring, tropical Hawaiian Sativa. The result was G13 Haze, an absolute staple of the Amsterdam coffee shop era that went on to sweep the Cannabis Cup.
For a Haze cross, she behaves remarkably well in an indoor setup. A lot of true sativas will grow lanky and take over your entire room, but the G13 influence keeps this one surprisingly compact and manageable. It's a dream for Sea of Green or SCROG setups. Now, she can be a bit of a tricky run for total beginners, and you might occasionally pop a seed that leans heavy toward the squat indica side, but generally, she stacks up beautifully. The resin production is off the charts, and she yields heavy, dense buds that are a far cry from the wispy flowers you'd expect from a Haze lineage.
When it comes to the smoke, G13 Haze is legendary for a reason. The terpene profile is straight-up tropical fruit salad, layered with sharp pine and a spicy, earthy backbone. The high is an absolute "creeper." At first, it hits you with this intensely cerebral, euphoric rush that makes you want to talk for hours. But just when you think you're blasting off into a jittery sativa orbit, that heavy G13 anchor drops, washing over your body with a deep, relaxing warmth. It's the perfect balance of head and body, and a masterclass in hybrid breeding.
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🧬 Explore the family: G-13 · Hawaii Sativa · G-Bolt Haze · Dragon Conspiracy · Sour Cream · Love potion 1.1 · Melon Kali · G13 Haze Citralah · Hawaiian Roses · Yummy
Ancestry Pedigree
Unknown or Legendary
Original Strains
Original Strains
Growing G13 Haze: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with G-13 or Hawaii Sativa will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
G13 Haze FAQ
How long does G13 Haze take to flower?
G13 Haze typically flowers in around 74 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is G13 Haze an indica or a sativa?
G13 Haze is listed as mostly sativa.
What are the parents of G13 Haze?
G13 Haze was bred from G-13 × Hawaii Sativa by Barneys Farm.
How strong is G13 Haze?
Reported THC for G13 Haze is 20% and CBD 0.7%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.
What environment does G13 Haze like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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