From the lab panel — 22% THC, <2% CBD. From Canadian grower reports — 350g/m2 yield, earthy/sweet dominant in cured flower. easy grow.

Smell-first: crack a dried bud and you get damp forest floor cut with a faint brown-sugar sweetness—nothing loud, nothing artificial, just an honest earthy profile that carries through to the smoke. That character comes from Original Harvest Seeds' proprietary MK Ultra Auto, an autoflowering build sitting at 22% THC with CBD staying well under 2%. Indoor runs typically finish in 8–9 weeks from sprout, and growers pulling 350 g/m² under decent LED setups are hitting the middle of what the strain is capable of—dial in your VPD and you'll land there without much trouble.

The plant earns its easy rating. It handles minor temperature swings, suits both indoor tents and sheltered outdoor spots across most Canadian summers, and doesn't punish beginners who are still learning feed schedules. Effects lean toward heavy physical relaxation with a clear onset—plan your evening around it. A solid pick for newer growers who want a high-potency autoflower without a complicated grow.

Genetics & Lineage

MK Ultra Auto traces its genetics to Proprietary cross (Original Harvest Seeds). This hybrid-dominant autoflower seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Original Harvest Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and euphoric effects, making this strain ideal for evening use and unwinding after a long day. The body-centered stone builds gradually, easing tension and promoting deep physical relaxation. With THC levels reaching 22%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

MK Ultra Auto delivers THC levels of 22%, placing it in the moderate-to-strong range that most regular consumers find comfortable. CBD content is minimal, so the psychoactive effects are front and center. The onset typically arrives within minutes with a balanced head-and-body experience that evolves over time.

Growing MK Ultra Auto

MK Ultra Auto is rated as easy difficulty, making it an excellent choice for first-time growers. The plants are resilient, forgiving of common mistakes like overwatering or inconsistent feeding schedules.

Indoor Growing: Expect a flowering time of 8-9 weeks with yields of 350g/m2. Plants typically reach 100-160cm indoors. Standard training techniques like topping and LST will help manage height and improve light penetration. Maintain temperatures between 68-80°F with relative humidity around 45-55% during flowering.

Outdoor Growing: This versatile strain performs well in both indoor and outdoor environments. Outdoor growers in warm climates can expect harvest from late September through October. Watch for humidity during late flowering to prevent bud rot, especially with dense flower formations.

Flavor, Aroma & Terpene Profile

MK Ultra Auto features a earthy, sweet terpene profile that develops complexity throughout the flowering cycle. A smooth, candy-like sweetness defines the flavor, with subtle complexity on the exhale. The aroma intensifies significantly during the final 2-3 weeks of flowering — carbon filtration is recommended for indoor grows requiring discretion.

Medical Benefits

While individual experiences vary, MK Ultra Auto is commonly reported to help with stress relief, chronic pain, insomnia, and muscle tension. The deeply relaxing effects make it a popular choice among medical users seeking nighttime relief. As with any cannabis strain, start with a low dose and increase gradually. Consult a healthcare professional before using cannabis for medical purposes.

Who Should Grow MK Ultra Auto?

This strain is ideal for beginner growers looking for a reliable, low-maintenance plant that delivers consistent results without advanced techniques. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy MK Ultra Auto from Seennabis?

When you purchase MK Ultra Auto through Seennabis, you are buying directly from Original Harvest Seeds — Catalog of original feminized and autoflower hybrids — clean genetics, stable phenotypes, designed for repeatable harvests across indoor and outdoor setups. Every order includes verified genetics, discreet shipping, and responsive seller support.