MK Ultra Seeds
G-13 Meets OG Kush — Maximum Potency, Beginner Friendly
MK Ultra seeds deliver a perfectly balanced 50/50 hybrid with 22% THC — enough punch to satisfy experienced consumers while remaining approachable enough for first-time cultivators. The G-13 x OG Kush lineage is what sets this strain apart: two of the most storied genetics in cannabis history, producing a cross with consistent, predictable results that growers can rely on. Available from Homegrown Cannabis Co, Seedsman, and Amsterdam Seed Supply, MK Ultra seeds for sale are accessible across multiple reputable seedbanks in feminized, regular, and autoflower formats.
MK Ultra Seed Types Compared
| Seed Type | Flowering Time | Yield | Best For |
|---|---|---|---|
| Feminized | 7–9 weeks | 400–500g/m² indoors / 170g/plant outdoors | Growers maximizing indoor yield or running outdoor seeds in full seasons |
| Regular | 7–9 weeks | Comparable to feminized (male plants reduce effective yield) | Breeders preserving or crossing G-13 x OG Kush genetics |
| Autoflower | 8–10 weeks from seed | Moderate — typically 300–400g/m² indoors | Fast turnaround grows, discreet setups, multiple annual runs |
Which Seed Type Should You Choose?
Feminized seeds are the dominant choice for buyers looking to extract the most from MK Ultra's 400–500g/m² indoor ceiling. TH Seeds carries the regular version — the only seedbank in this lineup offering that format — making it the go-to source for breeders who want to work with MK Ultra's G-13 x OG Kush genetics and create their own crosses or preserve the original phenotype pool.
Autoflower seeds, exclusively available through Amsterdam Seed Supply in this strain's lineup, trade some yield headroom for a compressed 8–10 week seed-to-harvest window. For growers running high-yield seeds as their primary format, feminized remains the stronger value proposition. But if speed and flexibility matter more than peak output, the autoflower version of this balanced hybrid is worth the tradeoff.
Where to Buy MK Ultra Seeds
Compare prices from verified seedbanks
| Seedbank | Score | Seed Types | Price | |
|---|---|---|---|---|
| Herbies Seeds | Feminized | From $6.18/seed | View at Herbies Seeds → | |
| Seedsman | Feminized | From $12.50/seed | View at Seedsman → | |
| MSNL | Feminized | From $12.87/seed | View at MSNL → | |
| Crop King Seeds | 7.2/10 | Feminized | From $13.00/seed | View at Crop King Seeds → |
| Homegrown Cannabis Co | Feminized | From $17.50/seed | View at Homegrown Cannabis Co → | |
| Seed City | Feminized | From $17.74/seed | View at Seed City → | |
| ILGM | 7.4/10 | Feminized | From $18.80/seed | View at ILGM → |
Links go directly to seedbank product pages.
MK Ultra Seeds — Quick Specs
| Strain Type | 50% Indica / 50% Sativa |
| Lineage | G-13 x OG Kush |
| THC Content | 22% |
| CBD Content | Less than 1% |
| Flowering Time | 7–9 weeks |
| Indoor Yield | 400–500g/m² |
| Outdoor Yield | 170g/plant |
| Growing Difficulty | Beginner |
| Available Seed Types | Feminized, Regular, Autoflower |
| Seedbanks Carrying This Strain | Homegrown Cannabis Co, ILGM, Seedsman, Seed Supreme, TH Seeds, Amsterdam Seed Supply |
MK Ultra Seeds — Frequently Asked Questions
What's the difference between MK Ultra Feminized, Regular, and Autoflower seeds?
The three formats serve different buyer goals. Feminized seeds are the most widely available format for MK Ultra — stocked by Homegrown Cannabis Co, ILGM, Seedsman, and Seed Supreme — and are the right choice for most buyers focused on yield and potency. Regular seeds are only available through TH Seeds and are specifically relevant for breeders who want to work with MK Ultra's G-13 x OG Kush genetics to create new crosses or maintain a gene pool. Autoflower seeds are exclusively available from Amsterdam Seed Supply in this strain's lineup, offering an 8–10 week seed-to-harvest window at the cost of some yield compared to the feminized version's 400–500g/m² indoor ceiling.
What THC level can I expect from MK Ultra seeds?
MK Ultra seeds are verified at 22% THC across the seedbanks carrying this strain. This puts it firmly in the high-potency category without reaching the extremes of 30%+ strains, making it a well-rounded choice for buyers who want serious potency from a G-13 x OG Kush cross without sacrificing the balanced hybrid character. CBD content is less than 1%, so this is not a strain buyers should select for CBD-forward purposes. The 22% figure is consistent across the feminized, regular, and autoflower formats.
Is MK Ultra a good strain for beginner growers?
MK Ultra is rated beginner difficulty, which is reflected in its widespread availability across six seedbanks — strains that are hard to grow successfully tend not to maintain that kind of retail footprint. For buyers purchasing their first high-THC hybrid, the combination of beginner difficulty, a manageable 7–9 week flowering window, and strong genetic consistency from the G-13 x OG Kush lineage makes MK Ultra seeds a lower-risk entry point than many comparable 22% THC strains. The autoflower version from Amsterdam Seed Supply adds an additional layer of simplicity for buyers who want to reduce variables further.
Where can I buy MK Ultra seeds online?
MK Ultra seeds are available from six seedbanks: Homegrown Cannabis Co, ILGM, Seedsman, Seed Supreme, TH Seeds, and Amsterdam Seed Supply. Feminized seeds are the most broadly available format, stocked by four of the six. If you are specifically looking to buy MK Ultra seeds in regular format, TH Seeds is your only option in this lineup. For autoflower, Amsterdam Seed Supply is the exclusive source. Seedsman is a strong starting point for price comparison on feminized seeds given their multiple pack size options, while Homegrown Cannabis Co and ILGM are worth checking for germination guarantees and promotional pricing.
