Heavy Metal by NW Roots

Type mostly indicaFlower ±53 daysCross Heavy Duty Fruity × Alien Kush F2

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A indica-leaning cross of Heavy Duty Fruity × Alien Kush F2, Heavy Metal — released by NW Roots — shows up in a lot of tents for good reason. 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 Heavy Metal grows against.

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BreederNW Roots
Typemostly indica
Flowering time±53 days
EnvironmentOutdoors
LineageHeavy Duty Fruity × Alien Kush F2

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🧬 Explore the family: Heavy Duty Fruity · Alien Kush F2

Ancestry Pedigree

Heavy Duty Fruity
TH Seeds
Big Bud
Sensi Seeds
Big Bud
The Seed Bank
USA Indica
Original Strains
Afghanistan Indica
Original Strains
USA Indica
Original Strains
Afghan-Skunk
Unknown or Legendary
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
Skunk
Unknown or Legendary
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Alien Kush F2
OG Raskal Genetics
Alien Kush
The Cali Connection
Las Vegas Purple Kush
Clone Only Strains
Northern Lights
Unknown or Legendary
Afghanistan Indica
Original Strains
Hindu Kush Indica
Original Strains
Alien Dog
The Cali Connection
Chem Dawg
Unknown or Legendary
Indica
Original Strains
Alien Technology
Unknown or Legendary
Afghanistan Indica
Original Strains
Alien Kush
The Cali Connection

Growing Heavy Metal: 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 Heavy Duty Fruity or Alien Kush F2 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.

Heavy Metal FAQ

How long does Heavy Metal take to flower?

Heavy Metal 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 Heavy Metal an indica or a sativa?

Heavy Metal is listed as mostly indica.

What are the parents of Heavy Metal?

Heavy Metal was bred from Heavy Duty Fruity × Alien Kush F2 by NW Roots.

What environment does Heavy Metal 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 Heavy Metal? 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.