Blue Train #3 by Treeology Genetics

Blue Train #3 strain photo
Type mostly indicaFlower ±60 daysCross Training Day × My Blue Nr3

Growers reach for Blue Train #3 as an indica-leaning option, a cross of Training Day × My Blue Nr3 out of Treeology Genetics. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Blue Train #3 grows against.

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Similar strains

Devine InterventionTreeology Genetics · ±70 daysTC91 x My Blue #3Treeology Genetics · ±65 daysTreeology Genetics - Land Race LarryTreeology GeneticsTreasure EyelandTreeology Genetics · ±67 daysBlasphemyTreeology Genetics · ±65 daysVendettaTreeology Genetics · ±70 daysAuto Cream MassMr. Hide · ±60 daysAuto Kritical RedMr. Hide · ±60 daysBlueberry CheesecakeDawg Star · ±60 daysChemdog GorillaExpert Seeds · ±60 daysChemdog MillionaireDr. Krippling · ±60 daysChemical XBeyond Top Shelf · ±60 daysAll Treeology Genetics →
BreederTreeology Genetics
Typemostly indica
Flowering time±60 days
EnvironmentOutdoors, Greenhouse
LineageTraining Day × My Blue Nr3

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🧬 Explore the family: Training Day

Ancestry Pedigree

Training Day
DNA Genetics Seeds
Trainwreck
Clone Only Strains
USA Hybrid
Original Strains
LA Confidential
DNA Genetics Seeds
OG LA Affie
Unknown or Legendary
Afghanistan Indica
Original Strains
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
My Blue Nr3
Treeology Genetics
Blue Dream
Clone Only Strains
Blueberry
DJ Short
Blueberry Line
Unknown or Legendary
Temple Flo
DJ Short
Floral Line
Unknown or Legendary
Purple Thai
Unknown or Legendary
Highland Oxacan Gold
Unknown or Legendary
Mexico Sativa
Original Strains
Chocolate Thai
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
HTAF
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
Super Silver Haze
Mr Nice Seedbank
Super Silver Haze
Green House Seeds
Original Haze
Cultivators Choice
Haze
Unknown or Legendary
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Thailand Sativa
Original Strains
India Sativa
Original Strains
Original Haze
Cultivators Choice
USA Mostly Indica
Original Strains
HitMan OG
DNA Genetics Seeds
OG Kush
Clone Only Strains
Thailand Sativa
Original Strains
Chem Dawg
Unknown or Legendary
Indica
Original Strains
Unknown Strain
Original Strains

Growing Blue Train #3: 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 Training Day or My Blue Nr3 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.

Blue Train #3 FAQ

How long does Blue Train #3 take to flower?

Blue Train #3 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 Blue Train #3 an indica or a sativa?

Blue Train #3 is listed as mostly indica.

What are the parents of Blue Train #3?

Blue Train #3 was bred from Training Day × My Blue Nr3 by Treeology Genetics.

What environment does Blue Train #3 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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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.