PG-13 by TH Seeds

PG-13 strain photo
Type indica/sativaFlower ±73 daysCross HP-13 × G-13

PG-13, from breeder TH Seeds, is an indica-leaning strain descended from HP-13 × G-13. Indoors it typically finishes flowering in around 73 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real PG-13 grows against.

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BreederTH Seeds
Typeindica/sativa
Flowering time±73 days
EnvironmentOutdoors
LineageHP-13 × G-13
DescendantsCH9 Female Seeds - FG13

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🧬 Explore the family: HP-13 · G-13 · CH9 Female Seeds - FG13

Ancestry Pedigree

HP-13
Clone Only Strains
Afghanistan Indica
Original Strains
Thailand Sativa
Original Strains
G-13
Unknown or Legendary
Indica
Original Strains

Growing PG-13: 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 HP-13 or G-13 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.

PG-13 FAQ

How long does PG-13 take to flower?

PG-13 typically flowers in around 73 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is PG-13 an indica or a sativa?

PG-13 is listed as indica/sativa.

What are the parents of PG-13?

PG-13 was bred from HP-13 × G-13 by TH Seeds.

What environment does PG-13 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 PG-13? 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.