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Bred by the experts at TH Seeds, MK Ultra emerges from a powerful lineage – OG Kush crossed with G13. This strain boasts winning back-to-back High Times Cannabis Cup wins in 2003 and 2004. A potent high, remarkable effects, and tantalizing flavors are what make MK Ultra a top pick. In this review, you’ll learn all about its characteristics, effects, medical potential, and how to grow it.

MK Ultra strain profile

Hybrid: 70% Indica – 30% Sativa

  • THC: between 16-19%
  • Indoor Yield: 400 g/m²
  • CBD: between 1-2%
  • Flowering: 8-9 weeks
  • Genetics: OG Kush & G13
  • Effect: Happy, relaxing, hungry

Is MK Ultra strain indica or sativa?

MK Ultra leans more towards indica with a 70/30 indica to sativa split. This combination gives users a deeply calming and relaxing high.

How strong is MK Ultra weed?

MK Ultra is moderately potent with THC levels between 16% and 19%. The CBD content ranges from 1-2%. This combination leads to a high that is intensely soothing and relaxing, making it perfect for those looking to unwind from stress.

What are the effects and tastes of MK Ultra strain?

MK Ultra takes effect quickly and delivers a calming and relaxing high. Its indica dominance makes the body feel sedated, while the Sativa aspects keep the mind feeling alert. It’s ideal for anyone looking to kick back and lose themselves in thought or for a night watching a movie.


  • Pine
  • Sweet


  • Relaxed
  • Euphoric


  • Dry mouth

Does MK Ultra strain make you hungry?

Yes, many users have noted MK Ultras’ ability to stimulate appetite. This could make it useful for anyone struggling with a lack of appetite or needing help eating due to medical treatments.

Does MK Ultra strain make you sleepy?

Definitely, the relaxing properties of MK Ultra can lead to drowsiness and induce sleep, making it an excellent choice for an evening smoke.

What are the potential medical effects of MK Ultra?

Some users have reported that MK Ultra helps them manage symptoms of arthritis, depression, nausea, pain, and PTSD. The high THC content can provide relief from pain and the calming effects may relieve depressive symptoms. The presence of CBD adds an additional layer that could be beneficial for its anti-inflammatory properties.

Growing MK Ultra strain

During the vegetative stage, MK Ultra showcases typical Indica traits. The plants are of medium height and dense structure. Methods such as Screen of Green (Scrog) can be applied to keep the canopy flat and maximize light exposure. This is highly beneficial come the flowering stage as multiple bud sites begin to develop.

As it moves into the flowering stage, MK Ultra develops dense buds with a rich, pungent smell. The plant is not particularly greedy when it comes to nutrients. You should carefully monitor the trichomes and aim to harvest around late September to early October. Trichomes can be used to indicate the peak potency window which for most cannabis strains lasts 2-3 weeks.


  • Difficulty: Easy
  • Flowering type: Phenotype
  • Flowering time: 8-9 weeks
  • indoor Yield: 400 g/m²
  • Outdoor Yield: 500-600 g/m²
  • Harvest Time: 10 weeeks
  • Indoor Height: 90-120 cM
  • Outdoor Height: 100-150 CM

Is MK Ultra strain good for beginners?

MK Ultra is pretty easy to grow, making it a great choice for beginners. However, due to its potency, novice consumers should approach it with caution and take it slow, as the effects can be strong.

What are the dominant terpenes in MK Ultra weed?

MK Ultra boasts a diverse terpene profile dominated by myrcene, caryophyllene, and limonene. Myrcene contributes to the earthy aroma, caryophyllene adds a spicy touch, and limonene brings a hint of citrus. Together, they create a multifaceted scent and flavor that is both enticing and satisfying.

Terpene table for MK Ultra weed

TerpenePercentageAssociated Scent
Carene0.09%Woody, piney
Pinene0.1%Pine, fresh
Myrcene0.19%Earthy, musky, fruity
Camphene0.2%Woody, earthy, pungent
Humulene0.07%Earthy, woody, spicy
Limonene0.14%Citrus, lemony
Linalool0.02%Floral, sweet, lavender
Terpinolene0.01%Piney, floral, herbal
Caryophyllene0.18%Spicy, woody, peppery

Joe Musgrave

An avid 420 enthusiast, grower, smoker and writer. Joe writes non stop, sharing his extensive knowledge in the field of cannabis with the wider online 420 community through blogs like ours at High Yield Strains.

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