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MK Ultra feminized seeds


MK-Ultra is an Indica-dominant photoperiod cannabis strain brought to you by T.H.Seeds as a cross between the legendary O.G. Kush and the Amsterdam favourite G-13 to yield a very pleasant-smelling hybrid which won’t fail to impress even the most fussiest of cannabis connoisseurs.

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T.H. Seeds
Outdoor Indoor
Indica dominant
350+ g/m² indoors
All characteristics

MK-Ultra: Grow a Champion!

MK-Ultra is a feminized photoperiod cannabis strain created by T.H.Seeds. Named after the infamous mind control experiments in the 1950’s, this Indica-dominant cannabis strain grows rapidly in the vegetative stage, has a very potent effect and can deliver very heavy yields of frosty cannabis nuggets in as few as 12 weeks from seed to harvest.

Growing this legendary strain could not be easier. She is suited for both indoor and outdoor cultivation however the best MK-Ultra samples are ones, which were grown indoors using an organic setup with high-power LED lighting. Indoor yields for this strain exceed 350 g/m2 after a short 8 – 9 week flowering period, the end of which sees her flowers and leaves turning purple. Winner of multiple High Times Cannabis Cups, when you germinate a pack of MK-Ultra you can rest assured that you’ve taken the first step to grow a champion. Here is some further information to help you grow this strain:

  • Medium height – this strain reaches a final height of 100 – 120 cm indoors and outdoors.
  • Max EC of water – 1.4 in veg, up to 1.8 during flower.
  • Water pH; 5.8 – 6.0
  • Recommended lighting: 600 W HPS
  • Recommended nutrients: Advanced Nutrients pH Perfect Connoisseur Bloom Part A&B.

Mind-bending Effect

In addition to having a name, which is synonymous with LSD, MK-Ultra has a stunning visual appearance. Depending on phenotype, she tends to grow large, chunky, purple flowers covered in a layer of white resin which turns golden when she’s ready for harvest. Her effect is body-heavy but can often leave you mentally relaxed.


  • Brand T.H. Seeds
  • Sex Feminized
  • Flowering type Photoperiod
  • Suitable for Outdoor
  • Suitable for Indoor
  • Effect Cloud of positivity
  • Genetics G13 x OG Kush
  • Awards Multiple Cup winner
  • Height 100 - 120 cm
  • Yield 350+ g/m² indoors
  • Flowering indoors 56 - 63 days
  • Genotype Indica dominant
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