24 Carat by Mephisto Genetics
If you want to talk about the absolute foundation of modern autoflowers, you have to talk about 24 Carat. This was the very first completed project by the boys over at Mephisto Genetics, and it totally changed the game for guys who thought autos were just weak, low-yielding ditch weed. To create this legend, they took an elite cut of BOG’s Sour Boggle and worked it extensively with a purple indica breeding auto. It took them years of selecting and stabilizing down to the F7 generation to lock in the traits they wanted. The result is a 100% indica-dominant powerhouse that practically grows itself.
In the dirt, 24 Carat is built like a brick outhouse. It’s short, squat, and incredibly bushy, making it the ultimate candidate for a Sea of Green setup in a cramped indoor tent. You rarely see this plant break 60 centimeters, but the internodal spacing is so tight that the entire main stem turns into one massive, solid cola. Real heads know to keep temperatures low during the final two weeks of flower, because if you do, she throws out these stunning pink and deep purple hues across the fan leaves. The frost coverage is so ridiculous that the trim bin is usually overflowing with premium hash material before you even finish manicuring the buds.
The smoke is heavy, narcotic, and unapologetically old-school. We’re talking dense, sticky nugs that reek of dark roasted coffee, damp earth, and a weirdly sweet bubblegum finish. It’s the kind of heavy-duty Afghanica stone that you reach for when your back is screaming or you haven't slept in three days. Some modern growers get it confused with DNA Genetics' 24K Gold, but don't get it twisted. Mephisto's 24 Carat is its own beast, an absolute staple of their "Originals" line that proved autos could finally run with the photoperiod big dogs.
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Similar strains
| Breeder | Mephisto Genetics |
|---|---|
| Type | ruderalis/indica |
| Flowering time | ±63 days |
| Environment | Outdoors |
| Lineage | Purple Indica × Sour Boggle |
| Descendants | Deep Blue C, Heisenberg Special, Sour Crack, Blue Microverse, Gold Glue, Sour Bubbly, Strawberry Nuggets |
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🧬 Explore the family: Purple Indica · Sour Boggle · Deep Blue C · Heisenberg Special · Sour Crack · Blue Microverse · Gold Glue · Sour Bubbly · Strawberry Nuggets
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Growing 24 Carat: 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 Purple Indica or Sour Boggle 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.
24 Carat FAQ
How long does 24 Carat take to flower?
24 Carat 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 24 Carat an indica or a sativa?
24 Carat is listed as ruderalis/indica.
What are the parents of 24 Carat?
24 Carat was bred from Purple Indica × Sour Boggle by Mephisto Genetics.
What environment does 24 Carat 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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