G13 Skunk by Seedsman

G13 Skunk strain photo
Type mostly indicaFlower ±56 daysCross G-13 × Skunk Nr1

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There probably isn't a strain surrounded by more paranoid folklore than G13. The legend goes that it was a government-bred super indica ripped straight from a federal research facility at the University of Mississippi back in the 60s or 70s. Whether you buy into the government myth or not, the original G13 was a legendary clone-only female that landed in the hands of heavyweights like Neville Schoenmaker in the 80s. But here’s the catch: because there was never a pure G13 male, you can't actually get "pure" G13 in seed form. Every single seed claiming the name is a hybrid, built off that original mother.

Seedsman's G13 Skunk is a perfect time capsule of that golden era of breeding. They took that original G13 mother cut and crossed her directly with Sam the Skunkman’s Skunk #1. The result is a heavy, dense, classic indica-dominant plant that brings together the massive, devastating potency of the G13 with the incredible stability and funky yield of the Skunk. You're looking at old-school Afghan hash aromas violently cut with that unmistakable, eye-watering skunky roadkill funk.

Over on MrNice and the original Overgrow forums, veteran growers still talk about the hunt for the perfect descendant phenotype. Since the original G13 mother lost her vigor and passed away years ago, these descendant hybrids are the only real way to experience those genetics. It grows like an absolute tank, throwing down dense, resin-caked colas that finish relatively quick. It's the kind of heavy, couch-locking smoke that immediately reminds you what high-grade weed felt like before everything on the shelf became a sweet dessert strain.

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Similar strains

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BreederSeedsman
Typemostly indica
Flowering time±56 days
EnvironmentOutdoors
LineageG-13 × Skunk Nr1
DescendantsFlight 813, Pepe Le Chem, Pepe Le Dank, Red Leicester Tease, Mind Can'trol, Fanta-G, Sweet Lemon Juice, Cindy La Pew

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🧬 Explore the family: G-13 · Skunk Nr1 · Flight 813 · Pepe Le Chem · Pepe Le Dank · Red Leicester Tease · Mind Can'trol · Fanta-G · Sweet Lemon Juice · Cindy La Pew

Ancestry Pedigree

G-13
Unknown or Legendary
Indica
Original Strains
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains

Growing G13 Skunk: 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 Skunk Nr1 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 Skunk FAQ

How long does G13 Skunk take to flower?

G13 Skunk typically flowers in around 56 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is G13 Skunk an indica or a sativa?

G13 Skunk is listed as mostly indica.

What are the parents of G13 Skunk?

G13 Skunk was bred from G-13 × Skunk Nr1 by Seedsman.

What environment does G13 Skunk 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 G13 Skunk? 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.