SU-57 by 207 Seeds

SU-57 strain photo
Type mostly indicaFlower ±56 daysCross Critical Nr47 × Master Kush

SU-57, from breeder 207 Seeds, is an indica-leaning strain descended from Critical Nr47 × Master Kush. 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 SU-57 grows against.

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Breeder207 Seeds
Typemostly indica
Flowering time±56 days
EnvironmentOutdoors, Greenhouse
LineageCritical Nr47 × Master Kush

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Ancestry Pedigree

Critical Nr47
Positronics
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
AK47
Serious Seeds
Colombia Sativa
Original Strains
Mexico Sativa
Original Strains
Thailand Sativa
Original Strains
Afghanistan Indica
Original Strains
Master Kush
White Label
Masterkush
Homegrown Fantaseeds
Hindu Kush Indica
Original Strains

Growing SU-57: 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 Nr47 or Master Kush 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.

SU-57 FAQ

How long does SU-57 take to flower?

SU-57 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 SU-57 an indica or a sativa?

SU-57 is listed as mostly indica.

What are the parents of SU-57?

SU-57 was bred from Critical Nr47 × Master Kush by 207 Seeds.

What environment does SU-57 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 SU-57? 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.