OG Chem by Connoisseur Genetics

OG Chem strain photo
Type mostly sativaFlower ±63 daysCross Chem Dawg × Chemdog D BX2

If you want to talk about raw, unadulterated gas, you have to talk about OG Chem by Connoisseur Genetics. This is a straight-up collision of two American titans—OG Kush and Chemdawg D. We're talking about the holy grail of fuel-heavy, citrus-forward profiles. Connoisseur Genetics never released this as a feminized line, which sparked a ton of debate among collectors back in the day, but that’s exactly what made it special. It was bred for the purists who wanted to hunt through regular seeds to find that perfect, face-melting mother plant. And let me tell you, the cuts that made the rounds were absolute fire.

Growing OG Chem wasn't exactly a walk in the park, though. Because it leans heavily on those unrefined Chem genetics, she can be a bit finicky and will definitely throw some hermie bananas if you stress her out too much. You have to keep your environment dialed in tight. But if you treat her right, the vigor is insane. She bushes out hard and produces some of the most resinous, rock-hard buds you've ever seen. Guys on the forums used to talk about how the smell would leak through carbon filters—a raunchy, offensive mix of burnt rubber, diesel fuel, ammonia, and sharp lemon Pine-Sol.

When it comes to the smoke, this sativa-dominant hybrid doesn't mess around. It's an incredibly potent, heavy hitter that somehow manages to keep your brain firing on all cylinders. The high is super energetic and creative at first, making it a great daytime smoke if you can handle the sheer strength of it. Eventually, that OG side creeps in and settles heavily into your limbs. It's no wonder this stuff became the foundational building block for strains like Double OG Chem. It’s loud, it’s nasty, and it’s a beautiful reminder of what real cannabis used to smell like before everything got crossed with dessert strains.

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BreederConnoisseur Genetics
Typemostly sativa
Flowering time±63 days
EnvironmentOutdoors
LineageChem Dawg × Chemdog D BX2
DescendantsStrawberry Dog Shit, OG Chem Cookies, Hippy Private Stash, Connoisseur Cookies, Labrador, Grape Gas, OG Jones

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🧬 Explore the family: Chem Dawg · Strawberry Dog Shit · OG Chem Cookies · Hippy Private Stash · Connoisseur Cookies · Labrador · Grape Gas · OG Jones

Ancestry Pedigree

Chem Dawg
Unknown or Legendary
Indica
Original Strains
Chemdog D BX2
Reservoir Seeds
Chem Dawg
Unknown or Legendary
Chemdog D BX1
Reservoir Seeds
Chem Dawg
Unknown or Legendary
Chemdog D Kush
Reservoir Seeds
Chem Dawg
Unknown or Legendary
Hindu Kush
Sensi Seeds
Hindu Kush Indica
Original Strains

Growing OG Chem: 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 Chem Dawg or Chemdog D BX2 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.

OG Chem FAQ

How long does OG Chem take to flower?

OG Chem typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is OG Chem an indica or a sativa?

OG Chem is listed as mostly sativa.

What are the parents of OG Chem?

OG Chem was bred from Chem Dawg × Chemdog D BX2 by Connoisseur Genetics.

What environment does OG Chem 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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Facts compiled from public breeder listings. Growing OG Chem? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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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.