From the lab panel — 20-25% THC, <1% CBD. From grower reports — 400-500g/m2 yield, earthy/floral dominant in cured flower. moderate grow.

Premium Cultivars lists this at $31.50 — above the median of $30.97 across 6 listings. Pack options: 3-seed at $31.50, 5-seed at $37.50, plus larger sizes.

Lineage: NYC Diesel × G13 — two strains with very different personalities, and MK Ultra lands closer to the G13 side of that cross. The indica weight here is real. At 20–25% THC, this isn't a casual daytime smoke, and the earthy, floral profile doesn't telegraph that potency until you're already in it. Feminized plants finish in 8–9 weeks and pull 400–500g/m² under solid light, which is a respectable return for the effort involved.

Moderate-difficulty growers should feel comfortable here — MK Ultra isn't fragile, but it rewards anyone who keeps canopy temps and humidity dialed in during late flower. It runs well indoors or out. The G13 influence tends to show in broad fan leaves and compact node spacing, so plan your training early if you're working with limited vertical space. Best suited to evening growers who want a sedative-leaning strain with a clean, non-chemical flavor.

Genetics & Lineage

MK Ultra traces its genetics to MK Ultra (Premium Cultivars). This indica-dominant feminized seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Premium Cultivars, 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 23%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

MK Ultra delivers THC levels of 20-25%, 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 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing MK Ultra

MK Ultra is rated as moderate difficulty, making it suitable for growers with some experience. Basic knowledge of nutrient schedules, pH management, and environmental controls will help maximize results.

Indoor Growing: Expect a flowering time of 8-9 weeks with yields of 400-500g/m2. Plants typically reach 100-180cm 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 40-50% 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 features a earthy, floral terpene profile that develops complexity throughout the flowering cycle. The complex aromatic bouquet develops fully after proper curing. 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 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?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy MK Ultra from Seennabis?

When you purchase MK Ultra through Seennabis, you are buying directly from Premium Cultivars — US-based cannabis seed retailer with a curated catalog of feminized, autoflower, and exotic genetics. Every order includes verified genetics, discreet shipping, and responsive seller support.