MK LAV by Old School Genetics

MK LAV strain photo
Type indica/sativaFlower ±60 daysCross Mk-Ultra × Lavender

MK LAV lands on the indica-leaning side of the spectrum, Old School Genetics's take on the Mk-Ultra × Lavender line. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real MK LAV grows against.

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BreederOld School Genetics
Typeindica/sativa
Flowering time±60 days
EnvironmentOutdoors
LineageMk-Ultra × Lavender

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🧬 Explore the family: Mk-Ultra · Lavender

Ancestry Pedigree

Mk-Ultra
TH Seeds
G-13
Unknown or Legendary
Indica
Original Strains
OG Kush
Clone Only Strains
Thailand Sativa
Original Strains
Chem Dawg
Unknown or Legendary
Indica
Original Strains
Lavender
Soma Seeds
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
Big Skunk Korean
Unknown or Legendary
Indica Sativa
Original Strains
Afghani Hawaiian
Unknown or Legendary
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
Hawaii Hybrid
Original Strains

Growing MK LAV: 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 Mk-Ultra or Lavender 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.

MK LAV FAQ

How long does MK LAV take to flower?

MK LAV typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is MK LAV an indica or a sativa?

MK LAV is listed as indica/sativa.

What are the parents of MK LAV?

MK LAV was bred from Mk-Ultra × Lavender by Old School Genetics.

What environment does MK LAV 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 MK LAV? 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.