Big Critical by Roor Seeds

Big Critical strain photo
Type mostly indicaFlower ±53 daysCross Critical Bilbo × Big Bud

Big Critical lands on the indica-leaning side of the spectrum, Roor Seeds's take on the Critical Bilbo × Big Bud line. Indoors it typically finishes flowering in around 53 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Big Critical grows against.

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BreederRoor Seeds
Typemostly indica
Flowering time±53 days
EnvironmentOutdoors
LineageCritical Bilbo × Big Bud

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🧬 Explore the family: Critical Bilbo · Big Bud

Ancestry Pedigree

Critical Bilbo
Clone Only Strains
Critical Mass
Mr Nice Seedbank
Afghanistan Indica
Original Strains
Skunk Nr1
The Seed Bank
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Big Bud
Sensi Seeds
Big Bud
The Seed Bank
USA Indica
Original Strains
Purest Indica
Clone Only Strains
Afghani
Unknown or Legendary
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
USA Indica
Original Strains

Growing Big Critical: 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 Critical Bilbo or Big Bud 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.

Big Critical FAQ

How long does Big Critical take to flower?

Big Critical typically flowers in around 53 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Big Critical an indica or a sativa?

Big Critical is listed as mostly indica.

What are the parents of Big Critical?

Big Critical was bred from Critical Bilbo × Big Bud by Roor Seeds.

What environment does Big Critical 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 Big Critical? 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.