The Complete MK Ultra Marijuana Strain Review

The Complete MK Ultra Marijuana Strain Review

The MK Ultra strain is a popular indica-leaning strain known for its powerful cerebral and hypnotic effects. It is the child of the OG Kush strain and G-13, so it's no wonder it's such a powerhouse. In addition, it has a sweet and piney flavor profile that's super refreshing on the palate.

Dominant Terpene:
Relaxation, Sleep/Sedation, Uplifting
Common Usage
Chronic painSleepStress
Growing Info

MK Ultra is a heavy-hitting indica-dominant strain that is famous for its strong hypnotic effects. It is named after the notorious “mind-control” program, Project MK Ultra, conducted by the CIA between 1950-73.

As part of Project MK Ultra, the CIA conducted a series of experiments at several different institutions. Psychedelic drugs were administered to unwitting participants without their consent or knowledge. So the fact that this strain is named after that program should give you an idea of just how potent it is.

What Is the MK Ultra Strain?

MK Ultra is an award-winning hybrid strain bred by T.H. Seeds. It is the offspring of two outstanding strains, namely OG Kush and the indica G-13. MK Ultra is a firm favorite among cannabis consumers, and its quality has seen it pick up some notable awards in the past. This strain came first in the Best Indica category in the 2003 High Times Cannabis Cup. It came in second in the same category the following year.

MK Ultra is one of the most potent strains globally renowned for its intense cerebral high and hypnotic effects. Given the strong nature of its effects, the MK Ultra strain is not suitable for novices. Even seasoned recreational or medicinal cannabis users will have to be careful with the amount they consume.


If you are planning on trying out MK Ultra, then do so when you have no other plans. This strain is a notorious couch-locker that will leave you so sedated you won’t want (or be able) to move.

Users say that MK Ultra’s effects are fast-acting, cerebral, and almost hypnotic. Typically, users experience a deep feeling of relaxation and euphoria before the overpowering physical effects take hold.

Some users say that consuming MK Ultra causes them to get the ‘munchies.’ As getting off the couch may become difficult, keep some healthy snacks nearby.

Sedation ultimately leads to drowsiness, so if you need a good night’s sleep, this strain may help.


A mature MK Ultra plant has a distinctive aroma. Cannabis cultivators say it is an unusual mixture of burnt plastic, lemon, and diesel.

Take note, MK Ultra’s pungent combination of earthy, sweet, and chemical-like aromas tend to linger. Therefore, take measures to ensure adequate ventilation when growing or even smoking indoors.


While MK Ultra’s aroma is overpowering, its flavor is not. It is quite a treat for the taste buds when smoked. Users generally experience MK Ultra’s earthy and more pungent flavors on the inhale and its woody, piney flavors on the exhale.


Appearance-wise, an MK Ultra plant is relatively short, usually growing to a height of between 100-120cm. Its dense flowers and tight buds have a generous layer of resinous trichomes, which are sticky to the touch.

MK Ultra Strain Grow Info

Experienced MK Ultra growers generally consider it to be an easy strain to grow. This plant grows well in soil or hydroponically, so cultivators should find either growing method pretty straightforward. It is naturally resistant to mold and mildew and thrives in a warm Mediterranean climate. The plant flowers between 8-9 weeks indoors, and the ideal time for outdoor harvesting is late September or early October.

When you grow MK Ultra indoors, it generally produces an average yield of around 12 ounces per square meter. Those growing MK outdoors are looking at a return of approximately 6 ounces per plant.

THC Content – Highest Test

MK Ultra weed packs a punch with an average THC level of approximately 20%. However, reportedly, some MK Ultra’s samples contained 22.8% THC.

CBD Content – Highest Test

MK Ultra’s relatively high THC content is offset by a more modest CBD level of up to 0.20%.

Medical Benefits of the MK Ultra Strain

MK Ultra is not only popular among recreational cannabis users but with medicinal marijuana consumers too. Arguably MK Ultra’s main medicinal benefit is its purported effectiveness at alleviating pain. Some painful conditions that users claim MK Ultra may help address include arthritis, muscular pain, and lower back pain. MK Ultra’s deeply sedating and soporific effects also make this strain a possible solution for people who have insomnia.

Cannabis consumers looking to de-stress and unwind may also benefit from MK Ultra’s relaxing effects. As this strain provides a short-term uplifting and euphoric high, it may offer temporary relief to people with depression.

Possible Side Effects of the MK Ultra Strain

The main side effect of MK Ultra is its powerful couch-lock effect, which will make even basic functioning quite challenging. Also, this strain’s intense cerebral and hypnotic effects could be quite disconcerting for novices unaccustomed to more potent cannabis strains.

Some MK Ultra consumers may also experience cottonmouth and dry eyes. Overindulging on this potent strain may result in dizziness, paranoia, and anxiety.

Final Thoughts on the MK Ultra Strain

MK Ultra’s potency and intense cerebral and hypnotic effects mean that it is not suitable for everyone. Novices would be wise to pass on this one and look for milder strains to enjoy. On the other hand, MK Ultra may be an option for experienced medicinal consumers looking for pain relief or to address insomnia.

Cultivators looking to grow MK Ultra weed should find this strain reasonably low maintenance and easy to grow. Its yield is relatively low, so growers should focus on the quality and not the quantity of their return.

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