Haze 19 by Positronics

Type sativaCross Original Haze

If you want to talk about true, unadulterated sativa history, you have to talk about Haze 19. Back in the mid-80s, when Wernard Bruining of Positronics was importing genetics from Sam the Skunkman in Amsterdam, they popped hundreds of seeds of the Original Haze. They were looking for the absolute perfect expression of that wild, four-way landrace hybrid (Colombian, Mexican, South Indian, and Thai). The 19th plant they selected was the winner, and it became an absolute legend. Haze 19 isn't a watered-down, modernized hybrid—it’s a pure, uncompromised slice of Old School genetics that hasn't been muddied by heavy indicas just to shorten the flowering time.

Growing this plant is an absolute nightmare if you don't know what you're doing. Seriously, it separates the men from the boys in the grow room. You're looking at a grueling 12 to 16-plus weeks of flowering time. The structure is pure wild sativa: lanky, stretching endlessly toward the light, and producing loose, airy, foxtailing buds that look almost skeletal compared to modern dense nugs. It's highly sensitive to nutrient lockout and environmental swings. You can't just pump it full of bottled nutrients; it requires a gentle hand, a perfectly dialed environment, and the patience of a saint. But the breeders who have mastered it—using it in projects like One Love Haze—know that the genetic traits it passes down are completely irreplaceable.

The payoff for all that suffering in the garden is a smoke experience you simply cannot find on dispensary shelves today. The aroma is complex and incredibly sharp: old church incense, cedar wood, and a striking hit of spicy Thai-lime citrus. It's a soaring, electric, almost heart-racing high. There is absolutely no ceiling and zero bodily sedation. It's the kind of weed that makes you want to deep-clean your entire house or talk for three hours straight. Haze 19 is a piece of living cannabis history, preserved for the heads who still respect a true, cerebral sativa experience.

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Similar strains

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BreederPositronics
Typesativa
EnvironmentIndoors
LineageOriginal Haze
DescendantsHaze, Haze 19 x Skunk 1, Haze Skunk, Positronics - One Love Haze, Growi Original Haze, Haze, Oxygen 19, Top Haze

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🧬 Explore the family: Original Haze · Haze · Haze 19 x Skunk 1 · Haze Skunk · Positronics - One Love Haze · Growi Original Haze · Haze · Oxygen 19 · Top Haze

Ancestry Pedigree

Original Haze
Cultivators Choice
Haze
Unknown or Legendary
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Thailand Sativa
Original Strains
India Sativa
Original Strains

Growing Haze 19: 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 Original Haze 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.

Haze 19 FAQ

Is Haze 19 an indica or a sativa?

Haze 19 is listed as sativa.

What are the parents of Haze 19?

Haze 19 was bred from Original Haze by Positronics.

What environment does Haze 19 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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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.