HazeMat OG—Chem 91 × Face Off OG, Chemical Warfare in a Seed Pack
Chem 91—one of the founding phenotypes of the Chemdog family, sourced from a bag at a Grateful Dead show in 1991—carries the most pungent, chemical diesel profile in cannabis genetics history. Face Off OG brings the structural mass and OG resin density of TerpZ's foundation male. HazeMat OG is the collision of those two: a cross where two of the heaviest-hitting genetics in the OG/Chem lineage produce a pack that growers have described as "chemically aggressive." The seedsherenow.com store listing for HazMat OG sits at $1175, which means this is a cross with active collector demand. Climate-controlled, sealed. Limited stock—when it's gone, it's gone.
The Chem 91 Lineage
Chem 91 is the root of the modern gas catalog—Chemdog, Sour Diesel, OG Kush all trace lineage through the Chem family. Archive Seed Bank (TerpZ) is a Portland-based breeding program built almost entirely on the precision selection of proprietary cuts. TerpZ acquired the Face Off OG #4—one of the most resin-dense OG phenotypes ever documented—and used it as the structural backbone for the entire Archive catalog. Rather than chasing trends, the program spent years backcrossing Face Off OG to lock in traits, then used the stabilized BX1 as the male input across dozens of crosses. The result is a catalog where every release shares a genetic foundation while expressing differently depending on the female side. Pairing Chem 91 with Face Off OG rather than staying within the OG-only framework was a bold selection by TerpZ: it brings the sour/chemical volatiles of the Chem line into a structural package defined by OG density. Our piece on the science behind cannabis breeding explains the genetics of why Chem x OG crosses produce this particular terpene layering. The Archive catalog at Seeds Here Now includes the current HazMat OG stock.
The Genetics
Chem 91—founding Chemdog phenotype, fuel/chemical/sour terpene profile. Face Off OG—TerpZ's foundation selection, heavy OG resin, compact structure. F1 cross. Expect plants from Chem-dominant (taller, more sour/fuel) to Face Off-dominant (compact, heavier OG base). Regular seeds, 12+ per pack.
Classic Breeding Stock
This is a climate-controlled, sealed pack from the original Archive Seed Bank production run—preserved since it was packed and now available to the public for the first time. Premier genetics from an era that defined modern cannabis breeding. Limited quantity. When it's gone, it's gone.
How It Stacks Up
| Strain |
Breeder |
Genetics |
Type / Pack |
| HazeMat OG—classic release |
Archive Seed Bank |
Chem 91 x Face Off OG |
REG 12pk |
| HazMat OG [REG] [12pk] |
Archive Seed Bank |
Chem 91 x Face Off OG #4 |
REG 12pk |
| Royal Oak [REG] [12pk] |
Archive Seed Bank |
Gelato #41 x Face Off OG BX1 |
REG 12pk |
| Gross Domestic Product [REG] [10pk] |
Thug Pug Genetics |
Ice Cream Cake x Unicorn Poop x Sophie's Breath F3 |
REG 10pk |
This Pack Won't Last
Original production run. Sealed and climate-controlled since it was packed. No restock possible. Once these units are gone, they're gone—permanently.
Buy now while stock lasts. →
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