MK-Ultra

MK Ultra by T.H. Seeds combines two legendary US cannabis lines. The strain was created by crossing G13 and OG Kush and is a strongly Indica-dominant genetic in which the traditional G13 meets the unmistakable character of a Californian OG Kush. MK Ultra received its unusual name in reference to the infamous CIA research programme of the same name. Today, it is one of the internationally known T.H. Seeds Seeds.

When cultivated, MK Ultra develops vigorous, compact plants with a distinctly Indica-influenced structure. The combination of its two parent lines ensures robust growth and makes the strain particularly interesting for indoor cultivation. MK Ultra displays many of the classic characteristics associated with traditional G13 and OG Kush genetics.

Particularly characteristic is the intense aroma of MK Ultra. Powerful earthy and spicy Kush notes combine with distinctive pine aromas to create a deep, long-lasting flavour profile. The typical OG Kush character remains clearly recognisable and is complemented by the more powerful, classic side of G13.

MK Ultra also made a name for itself early on at international competitions. At the High Times Cannabis Cup 2003, the strain won first place in the Indica category, followed by another second place in 2004. These awards contributed significantly to establishing MK Ultra as one of the classic Indica hybrids from T.H. Seeds.

• Lineage: OG Kush x G13
• Genetics: mostly Indica
• Flowering Time: 8 - 9 weeks
• Smell: very strong earthy, woody pine notes
• Height: 100 – 120 cm

T.H. Seeds: Amsterdam Breeding Since 1993

T.H. Seeds was founded in 1993 and is one of the oldest seed banks connected to Amsterdam’s cannabis scene. From the beginning, their work stood out because the genetics did not come from Europe but from America and other regions of the world. One of their first big successes was the Original Bubblegum, which went on to win several awards at the High Times Cannabis Cup. Over the years, strains like Darkstar, Citron Givré, London Pound Cake, and MK Ultra have kept them at the center of attention.

Quick Facts

Location: Amsterdam, Netherlands

Focus: Feminized and regular seeds with global genetics

Types Available: Feminized, regular, and specialty strains

Well Known For: Mother of Berries, MK Ultra, S.A.G.E, Sage n Sour

Works Well For: Growers interested in classic cannabis lines with a long history

Since 1995, their headquarters has been right in the middle of Amsterdam. Growers value their consistency, the terpenes and their strains have taken home awards across multiple events. Over the years, T.H. Seeds has built a worldwide reputation with legendary strains that are still cultivated and appreciated today. The brand stands for experience, innovation, and a deep passion for cannabis genetics. For many, T.H. Seeds is part of Amsterdam’s tradition and still one of the most respected names in cannabis genetics.