Heavy Metal Thunder by Slanted Farms

Type indica/sativaFlower ±67 daysCross SinMint Cookies × Gizmo

Heavy Metal Thunder lands on the indica-leaning side of the spectrum, Slanted Farms's take on the SinMint Cookies × Gizmo line. Indoors it typically finishes flowering in around 67 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 Thunder grows against.

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Similar strains

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BreederSlanted Farms
Typeindica/sativa
Flowering time±67 days
EnvironmentOutdoors, Greenhouse
LineageSinMint Cookies × Gizmo

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🧬 Explore the family: SinMint Cookies · Gizmo

Ancestry Pedigree

SinMint Cookies
Sin City Seeds
Girl Scout Cookies
Clone Only Strains
Blue Power
Sin City Seeds
Power
Clone Only Strains
Sour Dubble
BOG Seeds
Sour Diesel IBL
Reservoir Seeds
Sour Diesel
Unknown or Legendary
Original Diesel
Unknown or Legendary
MassSuperSkunk
Unknown or Legendary
Super Skunk
Sensi Seeds
Skunk Nr1
Sensi Seeds
Skunk Nr1
The Seed Bank
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Afghanistan Indica
Original Strains
Chem Dawg
Unknown or Legendary
DNL
Unknown or Legendary
RFK
Unknown or Legendary
Skunk
Unknown or Legendary
Skunk Nr1
Cultivators Choice
Northern Lights
Unknown or Legendary
Sour Bubble
BOG Seeds
BOGBubble
BOG Seeds
Double Gum
White Label
Bubblegum
TH Seeds
Bubblegum
Unknown or Legendary
USA Mostly Indica
Original Strains
Bubble Gum
Serious Seeds
Bubblegum
TH Seeds
BOGBubble
BOG Seeds
SoCal Master Kush
Clone Only Strains
Masterkush
Dutch Passion
Masterkush
Homegrown Fantaseeds
Hindu Kush Indica
Original Strains
White Moonshine
Unknown or Legendary
The White
Clone Only Strains
Indica Sativa
Original Strains
Blue Moonshine
DJ Short
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
Afghanistan Indica
Original Strains
HTAF
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
Gizmo
Slanted Farms Seed Company
GMO Cookies
Skunk House
Chem Dawg
Unknown or Legendary
Indica
Original Strains
Girl Scout Cookies
Clone Only Strains
F1 Durban
Unknown or Legendary
Cherry Pie Kush
Unknown or Legendary
Durban Poison
Dutch Passion
Durban Poison
Unknown or Legendary
South Africa Sativa
Original Strains
Chem Dawg
Unknown or Legendary
OG Kush
Clone Only Strains
Thailand Sativa
Original Strains
Chem Dawg
Unknown or Legendary

Growing Heavy Metal Thunder: 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 SinMint Cookies or Gizmo 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 Thunder FAQ

How long does Heavy Metal Thunder take to flower?

Heavy Metal Thunder typically flowers in around 67 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 Thunder an indica or a sativa?

Heavy Metal Thunder is listed as indica/sativa.

What are the parents of Heavy Metal Thunder?

Heavy Metal Thunder was bred from SinMint Cookies × Gizmo by Slanted Farms.

What environment does Heavy Metal Thunder 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 Thunder? 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.