Skullcap by Karma Genetics

Skullcap strain photo
Type indica/sativaFlower ±67 daysCross Headstash × Biker Kush

A indica-leaning cross of Headstash × Biker Kush, Skullcap — released by Karma Genetics — shows up in a lot of tents for good reason. 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 Skullcap grows against.

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Similar strains

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BreederKarma Genetics
Typeindica/sativa
Flowering time±67 days
EnvironmentOutdoors
LineageHeadstash × Biker Kush

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🧬 Explore the family: Headstash · Biker Kush

Ancestry Pedigree

Headstash
Karma Genetics
Pre16 Headstash
Cannarado Genetics
Girl Scout Cookies
Clone Only Strains
F1 Durban
Unknown or Legendary
F1
Unknown or Legendary
Unknown Strain
Original Strains
Durban Poison
Unknown or Legendary
South Africa Sativa
Original Strains
OG Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains
KarmaRado OG
Karma Genetics
Triangle Kush
Clone Only Strains
Unknown Strain
Original Strains
Hindu Kush Indica
Original Strains
SFV OG
Clone Only Strains
OG Kush
Clone Only Strains
White OG
Karma Genetics
The White
Clone Only Strains
Indica Sativa
Original Strains
SFV OG Kush BX2
The Cali Connection
SFV OG
Clone Only Strains
SFV OG Kush
The Cali Connection
SFV OG
Clone Only Strains
Afghani Nr1
Sensi Seeds
Afghanistan Indica
Original Strains
Afghanistan Indica
Original Strains
Biker Kush
Karma Genetics
Biker Kush
Karma Genetics
Hells Angel OG
Unknown or Legendary
OG Kush
Clone Only Strains
Blackberry
Unknown or Legendary
The Black
Unknown or Legendary
Afghani
Unknown or Legendary
Mexico Sativa
Original Strains
Vietnam Hybrid
Original Strains
Afghani
Unknown or Legendary
Lucifer OG
Karma Genetics
Hells Angel OG
Unknown or Legendary
SFV OG Kush BX2
The Cali Connection

Growing Skullcap: 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 Headstash or Biker 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.

Skullcap FAQ

How long does Skullcap take to flower?

Skullcap 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 Skullcap an indica or a sativa?

Skullcap is listed as indica/sativa.

What are the parents of Skullcap?

Skullcap was bred from Headstash × Biker Kush by Karma Genetics.

What environment does Skullcap 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 Skullcap? 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.