CBD Critical Mass by Phoenix Seeds

Type mostly indicaFlower ±56 daysCross Critical Mass × Unknown Strain

4 other breeders' versions of CBD Critical Mass — compare flowering times side by side →

Growers reach for CBD Critical Mass as an indica-leaning option, a cross of Critical Mass × Unknown Strain out of Phoenix Seeds. Indoors it typically finishes flowering in around 56 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real CBD Critical Mass grows against.

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Similar strains

BlueberryPhoenix Seeds · ±56 daysOriginal SkunkPhoenix Seeds · ±63 daysWhite WidowPhoenix Seeds · ±56 daysNorthern LightsPhoenix Seeds · ±63 daysOriginal Skunk ExpressPhoenix Seeds · ±70 daysAmnesia ExpressPhoenix Seeds · ±70 daysAuto White Widow x Big BudFemale Seeds · ±56 daysCherry Punch DawgHoly Seeds · ±56 daysChocolate MintVoC · ±56 daysChupilMassMedicalStrains · ±56 daysCindy La PewGage Green · ±56 daysCloudwalker OGBradley Danks · ±56 daysAll Phoenix Seeds →
BreederPhoenix Seeds
Typemostly indica
Flowering time±56 days
EnvironmentOutdoors, Greenhouse
LineageCritical Mass × Unknown Strain

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🧬 Explore the family: Critical Mass · Unknown Strain

Ancestry Pedigree

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
Colombia Sativa
Original Strains
Unknown Strain
Original Strains

Growing CBD Critical Mass: 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 Mass or Unknown Strain 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.

CBD Critical Mass FAQ

How long does CBD Critical Mass take to flower?

CBD Critical Mass 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 CBD Critical Mass an indica or a sativa?

CBD Critical Mass is listed as mostly indica.

What are the parents of CBD Critical Mass?

CBD Critical Mass was bred from Critical Mass × Unknown Strain by Phoenix Seeds.

What environment does CBD Critical Mass 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 CBD Critical Mass? 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.