Ultra Violet GMO
Cannabis seeds
by Growers Choice Seeds
Ultra Violet GMO Cannabis Seeds — Growers Choice
Ultra Violet GMO is an 80% indica-dominant feminised cannabis seed from Growers Choice that crosses GMO Cookies (Chemdawg x Girl Scout Cookies) with a purple MK Ultra phenotype, delivering THC levels between 24% and 30%. That's not a typo — this strain consistently tests at the very top end of what's commercially available. If you want dense, resinous buds with a knockout stone, this is the seed to grow.
Why Ultra Violet GMO Seeds Deserve Your Grow Space
We've seen plenty of strains claim 30% THC on the packet. Most of them are wishful thinking. Ultra Violet GMO actually backs it up — the GMO Cookies parentage brings that raw potency and garlic-fuel terpene profile, while the purple MK Ultra pheno adds bag appeal that'll make your jaw drop. Late in flower, the buds take on deep violet hues that look almost unreal under grow lights.
The indica dominance shows in every part of the plant. Short internodes, thick central stems, broad dark-green fan leaves — she grows compact and sturdy. Indoors, expect heights of 90–120cm. Outdoors, she'll stretch to around 200cm with room to breathe. That compact structure makes her one of the best indica seeds for SOG setups, where her homogenous growth traits really shine. Line up a flat canopy of these and you're looking at serious yields without the headache of training wildly different phenotypes.
The one thing to watch: that thick foliage can become a problem if you don't stay on top of it. She grows dense — properly dense — and without regular defoliation, you'll end up with poor airflow and light penetration through the canopy. We'd recommend combining defoliation with super cropping to open her up, especially in a tent or small room where every lumen counts.
Ultra Violet GMO Strain Specifications
| Spec | Value |
|---|---|
| Seed Bank | Growers Choice |
| Genetics | GMO Cookies x Purple MK Ultra Pheno |
| Type | 80% Indica / 20% Sativa |
| Seed Type | Feminised |
| THC Content | 24–30% |
| Indoor Height | 90–120cm |
| Outdoor Height | Up to 200cm |
| Indoor Yield | Up to 750g/m² |
| Mould/Pest Resistance | High |
| Recommended Techniques | SOG, Defoliation, Super Cropping |
| Seeds per Pack | 5 |
Growing Ultra Violet GMO — Indoor and Outdoor Tips
Ultra Violet GMO is a receptive plant that responds well to attention but doesn't punish you for small mistakes. She prefers moderate temperatures — nothing extreme in either direction — and her high resistance to moulds and pests makes her a genuinely solid choice for outdoor growers who can't control their environment the way indoor cultivators can.
- Start your feminised seeds using your preferred germination method — paper towel, jiffy pellets, or direct into a small pot of lightly moistened substrate.
- Transplant seedlings into their final containers once they've developed 3–4 sets of true leaves. For indoor SOG setups, smaller pots (7–11L) work well given her compact stature.
- During veg, keep an eye on how quickly the foliage fills out. Begin selective defoliation early — remove large fan leaves blocking light to lower bud sites. She responds extremely well to this.
- Apply super cropping to the main stem and any dominant branches during mid-to-late veg. This opens up the canopy and encourages more even bud development across the plant.
- Flip to 12/12 once your canopy is established. Expect vigorous bud development with thick, dense colas that pack on weight right through to harvest.
- Outdoors, plant in large pots or directly in the ground with generous spacing between plants. Her natural mould resistance means she handles damp autumn conditions better than most indicas.
- Harvest when trichomes show mostly milky-white with some amber — that 24–30% THC potential means timing your harvest correctly makes a real difference to the final effect.
What Ultra Violet GMO Smells, Looks, and Feels Like
The GMO Cookies lineage brings that unmistakable garlic-fuel funk — pungent, savoury, and nothing like your typical sweet or fruity strain. It's the kind of smell that fills a room and sticks to your fingers. If you've ever grown or smoked GMO Cookies, you know exactly what we're talking about. The MK Ultra parent adds an earthy, almost diesel undertone that rounds out the profile.
Visually, this strain is a showstopper. The buds are unbelievably thick and compact, coated in a heavy layer of trichomes that makes them look frosted. As temperatures drop during late flower, the purple MK Ultra genetics express themselves with deep violet and near-black hues running through the calyxes. It's the kind of bud you photograph before you break it up.
The effect? With 24–30% THC and 80% indica genetics, this is a heavy stone. Not a "watch a film and eat some crisps" indica — more of a "sink into the sofa and forget what you were doing" indica. Experienced smokers will appreciate the depth and duration. If you're newer to high-THC strains, approach with respect. A little goes a long way here.
Ultra Violet GMO vs Other Heavy Indicas
Compared to something like a standard GMO Cookies seed, Ultra Violet GMO adds that purple MK Ultra influence — you get similar potency and terpene profiles but with better bag appeal and arguably more homogenous growth traits. The SOG performance is a genuine advantage if you're running a sea of green setup.
| Trait | Ultra Violet GMO | Typical GMO Cookies |
|---|---|---|
| THC Range | 24–30% | 20–28% |
| Indica/Sativa | 80/20 | 90/10 |
| Indoor Height | 90–120cm | 80–130cm |
| Indoor Yield | Up to 750g/m² | 400–600g/m² |
| Purple Colouring | Yes — MK Ultra pheno | Rare |
| SOG Suitability | Excellent | Good |
| Mould Resistance | High | Moderate |
That yield potential of up to 750g/m² indoors is worth highlighting — it's well above average for an indica-dominant strain, and it's achievable with proper defoliation and light management. Outdoors, yields will vary with your climate and growing conditions, but the high mould resistance gives you a safety net that many heavy indicas simply don't offer.
Running Ultra Violet GMO in a SOG setup? Pair these seeds with a complete grow tent kit to get your environment dialled in from day one. A carbon filter is non-negotiable with this strain — that GMO funk will announce itself to everyone within a 50-metre radius without proper extraction.
Honest Limitations — What to Know Before You Grow
No strain is without its quirks, and Ultra Violet GMO has a couple worth mentioning. First, that dense foliage is both a blessing and a challenge. If you skip defoliation, you're inviting humidity issues deep in the canopy — even with her good mould resistance, stagnant air between those thick leaves isn't ideal. Budget time for regular leaf removal during veg and early flower.
Second, at 24–30% THC, this strain isn't the friendliest introduction to growing your own. Not because she's difficult to cultivate — she's actually quite forgiving — but because the end product is seriously potent. If you're growing for personal use and you're not accustomed to high-THC flower, you might find yourself with jars of bud that hit harder than you expected. That's not a complaint — just something to be aware of.
Third, the garlic-fuel terpene profile is divisive. Some growers love it, some find it overpowering. If you're after something sweet or fruity, this isn't it. Ultra Violet GMO smells like garlic bread left in a diesel engine, and that's exactly why people seek it out.
Frequently Asked Questions
Is Ultra Violet GMO sativa or indica?
Ultra Violet GMO is 80% indica and 20% sativa. The indica dominance shows in her compact growth structure, broad fan leaves, short internodes, and heavy physical stone. The 20% sativa contributes some vigour during veg without adding unwanted stretch.
What yield can I expect from Ultra Violet GMO indoors?
Under optimised conditions with proper defoliation and light management, Ultra Violet GMO can produce up to 750g/m² indoors. Actual yields depend on your setup, experience, and training techniques. SOG configurations tend to maximise her potential.
How resistant is Ultra Violet GMO to pests and mould?
Growers Choice rates this strain as highly resistant to both moulds and pests. That makes her a strong candidate for outdoor growing where you can't fully control environmental conditions. Still worth maintaining good airflow through defoliation, though.
How tall does Ultra Violet GMO grow?
Indoors, expect 90–120cm. Outdoors with plenty of root space, she can reach up to 200cm. Her naturally compact structure and short internodes make her easy to manage in tents and small rooms.
What does Ultra Violet GMO smell and taste like?
The GMO Cookies genetics bring a pungent garlic-fuel aroma with savoury, almost umami-like undertones. The MK Ultra parent adds earthy diesel notes. It's not subtle — a carbon filter is strongly recommended for indoor grows.
What growing techniques work best with Ultra Violet GMO?
SOG is where she excels thanks to homogenous growth traits. Combine that with regular defoliation and super cropping to manage her thick canopy. She prefers moderate temperatures and responds well to attentive feeding without being fussy.
How many seeds come in a pack of Ultra Violet GMO?
Each pack contains 5 feminised seeds. All seeds are feminised, so you won't need to identify and remove males during the grow cycle.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.