G13 x Widow by Mr. Nice
If you want to talk about actual connoisseur cannabis history, you have to bring up G13 x Widow by the legendary Mr. Nice Seedbank. Shantibaba and Howard Marks built this hybrid to preserve true, unadulterated genetics rather than chasing whatever commercial yield trend was popular at the time. They took the mythical, government-rumored G13 and crossed it with their original Black Widow (the actual White Widow lineage before all the naming drama). Because they only release this in regular seed form, you have to do some real pheno hunting, but that's exactly why the old-school growers respect it so much.
Running this strain is a bit of a wild card, and that’s the beauty of it. You might find a pheno that leans hard into the Afghan and South Indian heritage, staying short, squat, and finishing in just 7 weeks. Or, you might find a Brazilian-leaning sativa pheno that stretches out and needs a full 10 weeks to pack on its frosty weight. Either way, the resin production is stupidly aggressive. The terpene profile is complex and frankly a little weird—an earthy, floral funk mixed with bitter, spicy fruit notes that linger on your palate for hours. It doesn't smell like modern candy weed; it smells like a damp forest floor and raw hash.
The effects are notoriously heavy. A lot of medical growers keep a mother of this specifically for muscle pain and insomnia. It starts with a sharp cerebral rush, likely inherited from the Widow side, before violently shifting into a devastating physical stone. You smoke a bowl of this and your legs immediately feel like they weigh fifty pounds each. It’s a beautifully raw, authentic representation of 90s-era Dutch breeding that commands respect. You don't just smoke G13 x Widow casually before going to the grocery store—you smoke it when you have nowhere else to be.
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Similar strains
| Breeder | Mr. Nice |
|---|---|
| Type | mostly indica |
| Flowering time | ±60 days |
| Environment | Outdoors, Greenhouse |
| Lineage | G-13 × Black Widow |
| Descendants | Panama Powerhouse, Wizard's Potion, Crazy Daze, Black Gold, BCN Seeds - Sticky Wonder, Vietnam Gold |
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🧬 Explore the family: G-13 · Black Widow · Panama Powerhouse · Wizard's Potion · Crazy Daze · Black Gold · BCN Seeds - Sticky Wonder · Vietnam Gold
Ancestry Pedigree
Unknown or Legendary
Original Strains
Mr Nice Seedbank
Green House Seeds
De Sjamaan
Original Strains
Original Strains
Growing G13 x Widow: 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 G-13 or Black Widow 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.
G13 x Widow FAQ
How long does G13 x Widow take to flower?
G13 x Widow typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is G13 x Widow an indica or a sativa?
G13 x Widow is listed as mostly indica.
What are the parents of G13 x Widow?
G13 x Widow was bred from G-13 × Black Widow by Mr. Nice.
What environment does G13 x Widow 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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