Strains · February 23, 2026

MK Ultra — Mike’s Favourite

Mike’s favourite. More legend than anything, but still a great hitter. Late afternoon, mostly in shatter form.

Strain Profile · Indica-Dominant Hybrid

MK
Ultra

Named after a CIA mind-control program. The strain is less sinister, and more effective.

~20%Avg THC
~0%CBD
IndicaMostly
8–9 wksFlower Time
1st · 2003Cannabis Cup Indica

The Menace’s Take

MK Ultra is Mike’s favourite. It’s more legend than anything, but it’s still a great hitter.

For me it’s a late-afternoon thing, mostly in shatter form.

🧬
Genetics
OG Kush × G-13
🏷️
Breeder
T.H. Seeds, Amsterdam
🌡️
THC
~20% (Leafly average)
🌿
Top Terpene
Myrcene
🕔
My Timing
Late afternoon
💎
My Form
Shatter

Where the Name Comes From

MK-Ultra was the CIA’s Cold War mind-control research program, best known for its LSD experiments on people who hadn’t agreed to them, many of whom didn’t know they were being dosed. T.H. Seeds named the strain after it, pitching it as a mostly indica hybrid that will “hypnotize you.” That’s marketing, but with a sense of humour, and a government-experiment name suits a plant with G-13 in its family tree.

Lineage

Genetic Origin
OG Kush
LA’s signature Kush · pine, fuel, earth
×
G-13
Heavy indica · wrapped in government-grow legend
→
MK Ultra

The G-13 side is where “more legend than anything” earns its keep. The long-running story says G-13 came out of a U.S. government research grow, the University of Mississippi’s federal cannabis program, and was smuggled out by someone on the inside. Nobody has ever proven it, and that’s exactly why the story won’t die. What is on record is that T.H. Seeds crossed it with OG Kush, and the result won the Indica category at the 2003 High Times Cannabis Cup and took second the following year.

Aroma & Flavour

Pine-forward Kush, with earthy, woody and pungent notes. There’s a bit of citrus on the edge from the limonene, and a resinous finish that stays on the palate. It’s not subtle, and it isn’t trying to be.

Terpene Profile

Lab numbers vary from grower to grower, so the bars below show rank, not measured percentages.

Myrcene
#1
Earthy, herbal, musky — the classic heavy-indica terpene.
Caryophyllene
#2
Peppery, spicy — the bite on the exhale.
Limonene
#3
Citrus — lifts the front end of the high before the body weight arrives.

Effects

A fast, euphoric onset, then the indica side takes over with heavy relaxation, a tingly body, a hungry spell and a sleepy finish. Leafly reviewers mostly call it a nighttime strain. A late-afternoon dose hands you the evening already sorted.

Reported Effects

RelaxedEuphoricSleepyTinglyHappyHungry

Potential Side Effects

Dry MouthDry EyesDizzinessCouch-lock (in quantity)

Best Case Usage

WhenWhy
Late afternoonMy slot. The work’s done, the evening hasn’t started, and nobody needs anything from me.
ShatterA strong strain gets stronger as a concentrate. A little goes a long way, so pace yourself.
Wind-down / eveningMost people’s pick. The body weight and sleepy tail make it a natural end-of-day strain.
Not forAnything that needs a clear head, a set of car keys or a productive afternoon.

Growing Notes

Flowering Time
8–9 weeks (~58 days)
Indoor Yield
350 g+/m²
Height
100–120 cm, compact
Buds
Tight, dense, resin-coated

🏆 Awards

1st Place Indica — High Times Cannabis Cup, 2003
2nd Place Indica — High Times Cannabis Cup, 2004
13th Place Indica — The Karma Cup, 2015