3 Bears OG by Mephisto Genetics

When it comes to the heavy hitters in the auto world, Mephisto Genetics cemented their reputation with 3 Bears OG. This cornerstone of their "Artisanal" lineup was built by crossing a stellar cut of Karma’s Bear OG with their proprietary Triangle F3 auto line. The boys at Mephisto didn't just slap a ruderalis tag on it and call it a day; they spent multiple generations backcrossing and selecting to lock down that classic, true-to-form OG Kush profile in an auto format. The end result is a stout, indica-dominant beast that reliably wraps up its life cycle in a quick 65 to 80 days from sprout.

If you scroll through r/MephHeads or Overgrow, you'll see why 3 Bears OG is consistently ranked as a must-grow. Structurally, it stays compact and bushy, usually maxing out around three feet tall indoors, which makes it perfect for tight tent spaces. But don't let the short stature fool you. The colas swell up incredibly dense and get totally coated in grease, pushing THC levels up to the 24% mark. Growers always hype up its resilience, especially in hot environments where other autos would herm or stunt. It's a forgiving plant that rewards low-stress training with an ocean of thick, frosty tops.

The terpene profile is straight nostalgic fire. Popping a jar hits you with that quintessential OG mix of heavy gas, sharp lemon-pine, and deep earth, though you'll occasionally pull a pheno that throws off faint watermelon or sweet berry notes. The smoke delivers a fast-acting, euphoric rush that melts down into a heavy, body-centering calm. It’s potent enough to wreck your evening if you overdo it, but functional enough in small doses to just keep you relaxed. Honestly, there's a reason Mephisto uses this cut as the backbone for so many of their modern crosses.

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Similar strains

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🧬 Explore the family: Auto Triangle Kush · Beary White · Samsquanch OG · ManBearAlienPig · Sour Patch Bears · Blue Bear OG · Yeti OG x 3 Bears OG

Ancestry Pedigree

Growing 3 Bears OG: what to expect

As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Karmas OG or Auto Triangle Kush 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.

3 Bears OG FAQ

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Facts compiled from public breeder listings. Growing 3 Bears OG? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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