TC91T by Treeology Genetics

TC91T strain photo
Type mostly indicaFlower ±70 daysCross TC91 × TC91

A indica-leaning cross of TC91 × TC91, TC91T — released by Treeology Genetics — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 70 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real TC91T grows against.

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BreederTreeology Genetics
Typemostly indica
Flowering time±70 days
EnvironmentOutdoors, Greenhouse
LineageTC91 × TC91

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🧬 Explore the family: TC91 · TC91

Ancestry Pedigree

TC91
Treeology Genetics
Tahoe OG Kush
The Cali Connection
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains
SFV OG Kush
The Cali Connection
SFV OG
Clone Only Strains
OG Kush
Clone Only Strains
Afghani Nr1
Sensi Seeds
Afghanistan Indica
Original Strains
Afghanistan Indica
Original Strains
Chem 91 SK VA
The Cali Connection
Chem 91 Skunk VA
Clone Only Strains
Chemdog
Unknown or Legendary
Indica Sativa
Original Strains
Chem 91 Skunk VA
Clone Only Strains
TC91
Treeology Genetics

Growing TC91T: 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 TC91 or TC91 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.

TC91T FAQ

How long does TC91T take to flower?

TC91T typically flowers in around 70 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is TC91T an indica or a sativa?

TC91T is listed as mostly indica.

What are the parents of TC91T?

TC91T was bred from TC91 × TC91 by Treeology Genetics.

What environment does TC91T 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 TC91T? 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.