How to Grow Ultra Violet OG
Ultra Violet OG is a striking, deeply relaxing indica hybrid that crosses Purple Indica with Face Off OG. It carries a smooth 16–20% THC, an earthy-sweet flavour and rich purple hues, finishing in 8–10 weeks. It leans a heavy 80% indica, giving a happy, chatty but settled character on top of a colourful, resinous grow.
The Purple Indica side brings the deep violet colouring and relaxation, while Face Off OG adds the resin and a potent kush backbone. The result is an 80% indica plant that is as eye-catching as it is mellow, with dense, trichome-coated buds.
Recommended Strains
Ultra Violet OG
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THC | 16% - 20% (Medium) |
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Type | Feminized |
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Yield | Low |
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Phenotype | 80% Indica / 20% Sativa |
2046 Fast Version
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THC | 20% - 26% (High) |
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Type | Fast Flowering |
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Yield | High |
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Phenotype | 20% Indica / 80% Sativa |
Because it is feminized, forgiving and easy to manage, Ultra Violet OG sits among our beginner-friendly strains. You can see the full genetics and buy Ultra Violet OG seeds on the strain page.
Strain Profile at a Glance
| THC | 16–20% (medium) |
|---|---|
| Lineage | Purple Indica x Face Off OG |
| Type | Feminized |
| Genetics | 80% Indica / 20% Sativa |
| Climate | Temperate |
| Flowering time | 8–10 weeks |
| Harvest | October (outdoors) |
| Height | 4.92 ft / 1.5 m |
| Yield | Low |
| Yield indoor | 0.66–0.98 oz/ft² (200–300 g/m²) |
| Yield outdoor | 21.16 oz/plant (600 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Earthy, Herbal, Sweet |
| Effects | Happy, Relaxed, Talkative |
Promos & Deals
Climate and Where to Grow It
Ultra Violet OG suits a temperate climate with warm, mild days and a reliable season. Grown outdoors it finishes around October, so pick a region that stays warm and dry into autumn to let its resinous buds ripen fully before the damp arrives.
Its heavy indica lean keeps the plant compact and bushy at around 1.5 m, but the dense buds can trap moisture, so keep humidity moderate and the airflow steady through flowering to protect them from bud rot. One of the joys of this strain is its colour: the Purple Indica side turns the buds deep violet when night-time temperatures drop in late flower, so a cool finish brings out those rich purple tones.
Indoors it is happy at daytime temperatures around 68–80°F (20–27°C), with slightly cooler lights-off temperatures late in bloom to deepen the colour. A little space around the plant keeps light reaching the lower buds.
Growing Basics
As a feminized photoperiod strain, Ultra Violet OG gives you virtually all female plants, so there is no need to sex seedlings or remove males. That makes it simpler to run than regular seeds and a good fit for less experienced growers.
Run a vegetative stage under long days, usually 18 hours of light, then switch to a 12/12 light schedule to trigger flowering. Its compact, indica-leaning structure takes well to a little topping and low-stress training during veg, which spreads the canopy and helps this feminized plant make the most of its resinous colas.
Feeding Schedule (EC Guide)
Feed to the stage rather than the calendar, starting low and building up as the plant asks for more. The EC values below climb from a gentle seedling feed to a stronger bloom feed, then drop back for the flush.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4–0.6 | Very light feed, focus on healthy root growth |
| Vegetative growth | 0.8–1.2 | Raise nitrogen gently under 18-hour days |
| Early flower | 1.2–1.4 | After the 12/12 flip, shift toward P and K |
| Full flower | 1.4–1.6 | Peak bloom feed while the colas fatten |
| Flush | 0.0–0.4 | Plain water for the final 1–2 weeks |
Flowering Time and Harvest
After the flip to 12/12, Ultra Violet OG flowers in 8–10 weeks. It is a lower-yielding plant indoors, returning 0.66–0.98 oz/ft² (200–300 g/m²), so it rewards quality and colour over sheer bulk, while a single outdoor plant can still bring in a solid 21.16 oz (600 g).
The strong indica lean builds dense, resinous, purple-tinged flowers. Harvest when most trichomes have turned cloudy with a few amber for the fullest, most relaxed expression, and give the plant a 1–2 week plain-water flush beforehand to clean up the final flavour. If you want the deepest purple, let the late-flower nights run a little cool before you cut.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15–18°C) and 55–60% humidity for 7–14 days, until the thin stems snap rather than bend. A slow, even dry preserves both the resin and the purple colour, which matters a lot with a strain you have grown partly for its looks.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure deepens the earthy-sweet aroma and smooths the smoke, which is exactly what a resinous OG hybrid like this deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Ultra Violet OG is a frosty, resin-coated plant, so the trim is great for dry sift, bubble hash or rosin, giving you a bonus run of concentrate from material most growers throw away.
Flavor and Terpenes
Ultra Violet OG tastes earthy and herbal with a sweet undertone, a smooth, old-school profile rather than a loud fruity or citrus one. The earthy base leads, lifted by a gentle sweetness and a herbal, slightly spiced edge.
Of its many terpenes, six lead the character: terpineol (a soft woody-floral note), borneol (earthy, camphor-like), eugenol (a warm, clove-like herbal spice), linalool (gentle floral sweetness), terpinolene (fresh, herbal lift) and nerolidol (woody and delicate). Behind them sit cedrene, camphene, citral, limonene, fenchol and phytol, a broad supporting cast that rounds out the earthy, herbal, sweet profile with a faint bright edge.
Effects and Best Use
With its heavy 80% indica genetics, Ultra Violet OG is reported as happy, relaxed and talkative, a mellow, sociable character that lifts the mood while easing the body. It is a settled, body-forward experience rather than a racy one.
That makes it a natural end-of-day and downtime strain, and the chatty, happy side keeps it enjoyable in company. With its medium 16–20% THC it stays approachable, and paired with its eye-catching purple looks it is as satisfying to grow and show off as it is to smoke.
Common Problems and Pro Tips
Ultra Violet OG is a forgiving grow, but it is a dense, purple OG indica chosen for quality over indoor bulk, so plan around all three.
- Manage the OG stretch: its Face Off OG side reaches up early in flower, so train the tops or give extra headroom to keep the canopy even and well lit.
- Watch the humidity: as an 80% indica its buds are dense and trap moisture, so keep flowering humidity down and run a fan to prevent bud rot.
- Use cool nights for colour: its Purple Indica heritage turns the buds purple when late-flower nights run cool, so a slight temperature drop brings out that colour.
Expert tip: its indoor yield is light, so give each plant good light and space. A slow dry and a careful cure protect its earthy, herbal, sweet character and keep the purple colour after harvest.
Frequently Asked Questions
Is Ultra Violet OG indica or sativa?
It is strongly indica-dominant, at 80% indica and 20% sativa, so the effect is relaxed and body-forward with a happy, chatty lift. That indica build comes with an OG-style stretch early in flower, so train the tops to keep the canopy even while the dense buds fill out through bloom.
Is Ultra Violet OG feminized?
Yes. These are feminized seeds, so you get virtually all female plants and do not need to sex seedlings or remove males, which keeps the grow simple. That also makes better use of your space, since every seed you plant turns into a productive, purple-tinged plant rather than a male to cull.
Why do the buds turn purple?
The Purple Indica heritage brings out purple colouring when night-time temperatures drop in late flower. A cool finish deepens those violet tones. The colour is cosmetic rather than a sign of potency, so chase cooler nights only if you want the look, and judge ripeness by the trichomes instead.
How long does Ultra Violet OG take to flower?
About 8 to 10 weeks after the flip to 12/12. Grown outdoors in a temperate climate it finishes around October. Its dense buds benefit from good airflow through that window, so keep a fan moving air across the canopy, and cooler late-flower nights help bring out its purple colour.
What does Ultra Violet OG taste like?
Expect an earthy, herbal flavour with a sweet undertone, driven by its terpineol, borneol, eugenol and linalool terpenes. Dry slowly in a cool, dark space and cure in jars so that grounded, herbal-sweet character comes through at its best, and so the buds hold their colour after harvest.
How much does Ultra Violet OG yield?
It is a lower producer indoors, at 0.66 to 0.98 oz/ft² (200 to 300 g/m²), but a single outdoor plant can still reach a solid 21.16 oz (600 g) in a good season. That gap means it rewards a sunny outdoor spot, while indoors it is grown more for quality than for bulk.
