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MK Ultra feminised is a heavy hitter with real old-school charm. Packed with 24 percent THC and a knockout indica buzz, it blends earthy skunk flavours with that perfect lights-out kind of high.




MK Ultra doesn’t tiptoe in. It strolls in with swagger, a 24% THC punch, and a reputation that makes other strains straighten up and pay attention. This heavy indica-dominant hybrid has been a go-to for connoisseurs who want hard-hitting effects without sacrificing flavour. Earthy, skunky, and surprisingly sweet once it settles in, MK Ultra is ideal for growers who aren’t afraid of a little commitment and want the kind of strain that earns a permanent spot in the stash jar.
With high fungal resistance, tight internodal spacing, and those famously sleepy, euphoric effects, MK Ultra rewards attention with chunky, resin-dripping colas and a deep body stone that feels like sinking into a gravity blanket. If you're looking for a strain with personality, power, and proper grower payoff, here it is.
MK Ultra Fem is the lovechild of two heavyweight legends: OG Kush and G13. Both strains carry serious clout on their own, OG Kush for its diesel funk and heavy-handed euphoria, G13 for its mysterious, government-conspiracy-level backstory. Combined, they created a high-THC hybrid that’s nearly mythical in the medical and recreational scenes. MK Ultra earned its stripes early, winning Best Indica at the High Times Cannabis Cup, and hasn’t slowed down since.
This is couch-lock with a smile. The high kicks off euphoric and uplifting. There’s a definite mental haze that loosens the shoulders and silences the stress. But give it a few minutes and the indica dominance takes the wheel. Expect deep relaxation, an anchored calm, and a powerful body melt that can easily shift into full-on sedation. It’s a great end-of-day strain, ideal for sleep, stress, and that "I'm not moving for the next few hours" vibe.
flavour-wise, it delivers a pungent blend of earth and skunk, with just enough sweetness to make each pull smooth. It’s loud, funky, and unmistakably old-school in its aroma, something that fans of 90s Kush will absolutely love.
With THC levels clocking in at 24%, MK Ultra is not playing around. This isn’t the strain to pass to your buddy who “only smokes sometimes.” The 0.5% CBD helps soften the edges just a touch, but make no mistake, this is a knockout hybrid with a strong indica lean and the potency to match.
The terpene profile here leans into the classics with Caryophyllene, Limonene, Myrcene, Pinene, and Terpinolene working together to shape both the flavour and effects. Myrcene and Caryophyllene lay the groundwork with deep relaxation and anti-inflammatory perks. Limonene adds a little citrus lift to the mood, while Pinene and Terpinolene bring a bit of brightness and edge to the otherwise heavy body stone. The result is a balanced ride with real staying power.
MK Ultra is geared more toward intermediate or advanced growers who want to push their skills with a high-reward strain. She’s not wildly difficult, but her dense buds and resin production mean good airflow and humidity control are key, especially during late flower. The reward for getting it right? Chunky colas coated in trichomes and that signature knockout potency.
Whether you're working with a climate-controlled tent or letting her bask under the sun, MK Ultra adapts well. Indoors, she stays between 80 cm and 120 cm tall, compact enough for smaller spaces but still needing good ventilation. Outdoors, she can stretch to 130 cm and 180 cm and thrives in Mediterranean, temperate, arid, or even colder climates. Thanks to her high fungal resistance, she holds up well against mould and mildew, which gives outdoor growers a nice buffer during late bloom.
MK Ultra Fem takes about 56 to 63 days to flower, which is right in the sweet spot for most indica hybrids. Indoors, you can expect yields between 400 grams per m2 and 500 grams per m2. Outdoors, under the right conditions, she can push out 500 grams per plant to 600 grams per plant. Not the biggest yielder on paper, but what she produces is pure quality. The buds are dense, sticky, and dripping with potency.
Looking for a strain that brings the heat in both the grow room and the grinder? MK Ultra is your girl. With award-winning genetics, rich terpenes, high THC, and effects that leave a lasting impression, this strain is a must-have for anyone serious about their homegrow. Grab your MK Ultra seeds today at WeedSeedsExpress and see why this powerhouse hybrid still holds legend status in the cannabis world.
Click here for the full strain description.
| Lineage | OG Kush X G13 |
| Flowering Type | photoperiod |
| Gender | feminized |
| Genotype | Indica dominant |
| Ratio | 30 % Sativa / 70 % Indica |
| Grower Profile | Advanced |
| THC | Up to 24% |
| CBD | Up to 0.50% |
| Yield Indoor | Up to 500 gr./m2 |
| Yield Outdoor | Up to 600 gr./plant |
| Height Indoor | Up to 120 cm |
| Height Outdoor | Up to 180 cm |
| Climate | Temperate, Desert, Arid, Oceanic |
| Flowering Time | 56 to 63 days |
| Flavors | Earthy, Pungent, Skunk, Sweet |
| Terpines | Caryophyllene, Limonene, Myrcene, Pinene, Terpinolene |
| Effects | Euphoric, Happy, Relaxed, Sleepy, Uplifting |
What does MK Ultra taste and smell like?
Earthy, piney and woody with a pungent skunk note, plus hints of citrus and spice; the aftertaste is smooth, sweet-herbal.
What effects does MK Ultra have and how strong is it?
Fast-acting, deeply relaxing body high with a euphoric, dreamy head effect; couch-lock is possible. THC is typically high (around 18–23%) and CBD is low.
Is MK Ultra suitable for beginners?
Yes. It has a compact indica structure and manageable stretch, responds well to topping, LST and SOG/SCROG. Keep humidity in check to avoid mould late in flowering.
What is the flowering time and outdoor harvest window for MK Ultra?
Indoors, flowering takes about 8–9 weeks. Outdoors, harvest is usually from late September to early October in the northern hemisphere.
What yields can I expect from MK Ultra?
Indoors, up to 450 grams per m2 under optimal conditions. Outdoors, up to 500 grams per plant with ample sun and good nutrition.
How tall does MK Ultra grow?
Typically compact: about 100 cm indoors; outdoors in warm climates plants can reach up to around 180 cm.
What climate and temperature does MK Ultra prefer?
Temperate to warm conditions with moderate humidity; ideal daytime temperatures around 24 °C, slightly cooler at night. Ensure good airflow.
What type of seeds and genetics are MK Ultra?
Usually offered as feminised photoperiod seeds that flower under a 12/12 light cycle; genetics are indica-dominant, famously G13 × OG Kush.
