How to Grow OG Kush Fast Version: High-THC Indica
OG Kush Fast Version is a quicker-finishing take on the world-famous OG Kush, keeping the classic gassy flavor while shaving weeks off the harvest. This 75% indica pairs a berry, citrus and diesel profile with a high 20-24% THC, and a happy, euphoric, deeply relaxing effect, on a compact, high-yielding plant ready in 7-9 weeks of bloom.
Made by crossing OG Kush with a fast-flowering parent, it keeps the robust, resinous, diesel-forward character that made OG Kush a legend, while speeding up the finish for impatient growers. As a 75% indica / 25% sativa, it leans toward a strong, relaxing body feel with a bright, euphoric lift on top.
Recommended Strains
OG Kush Fast Version
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THC | 20% - 24% (High) |
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Type | Fast Flowering |
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Yield | High |
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Phenotype | 75% Indica / 25% Sativa |
Alien Og Regular
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THC | 18% - 22% (Medium) |
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Type | Regular |
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Yield | Medium |
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Phenotype | 50% Indica / 50% Sativa |
It is beginner-friendly and a strong producer indoors, which makes it an easy way to grow a true OG. You can see the full genetics and buy OG Kush Fast Version seeds on the strain page, and browse more of our fast-flowering seeds alongside it.
Strain Profile at a Glance
| THC | High (20-24%) |
|---|---|
| Lineage | OG Kush x fast-flowering parent |
| Type | Fast Version (feminized, not autoflower) |
| Genetics | 75% Indica / 25% Sativa |
| Climate | Tropical |
| Flowering time | 7-9 weeks |
| Harvest | All season |
| Height | 4.59 ft / 1.4 m |
| Yield indoor | 1.8 oz/ft² (550 g/m²) |
| Yield outdoor | 1.59-3.17 oz/plant (45-90 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Berry, Citrus, Diesel |
| Effects | Happy, Relaxed, Euphoric |
Promos & Deals
Growing Fast Version Seeds
A Fast Version is not an autoflower. It carries a touch of fast-flowering genetics in its background, but it is still a photoperiod plant, so it flowers on a light change rather than purely on age. You grow it under a long day of around 18 hours through the vegetative stage, then switch to a 12/12 cycle to trigger flowering, just as you would with any photoperiod strain.
What you gain is speed: once you flip, it finishes its bloom quickly, in around 7-9 weeks, which is faster than the original OG Kush. Being feminized, every seed grows into a flowering female, so there is no need to sex the plants. Because it finishes so fast, it is a flexible, all-season choice that can fit more than one indoor run or beat an early autumn outdoors.
Climate and Where to Grow It
OG Kush Fast Version does best in a warm, sunny, tropical climate with plenty of light and good airflow. As a 75% indica it has a sturdy, bushy structure and stays compact at around 1.4 m, so it fits most tents and plots. Its quick finish is a real advantage in cooler regions, since it beats the worst of the autumn damp.
Indoors is really where this one shines, so if yield is your goal, a controlled tent is the way to go: it is a strong 550 g/m² producer inside, while outdoors it is far more modest per plant at 45-90 g. Aim for daytime temperatures around 68-80°F (20-27°C) with nights a little cooler, and keep airflow steady over and under the canopy.
Keep humidity in check to protect its dense, resinous, gassy buds: around 55-60% in veg, nearer 40% in flower, and down to about 30% by harvest, which keeps mould and bud rot away over the fast bloom.
Feeding Schedule (EC Guide)
This is a vigorous, resinous indica that packs on buds fast, so feed it steadily, but still start low and build up as the plant asks for more. Taper right off for the final flush so the berry-citrus-and-diesel flavor comes through clean and the smoke finishes smooth.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed, focus on healthy root growth |
| Vegetative growth | 0.8-1.2 | Build the frame, raise nitrogen gradually |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4-1.6 | Peak bloom feed while the resinous buds swell |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once you flip to 12/12, bloom runs a quick 7-9 weeks, faster than a standard photoperiod strain. As a 75% indica, OG Kush Fast Version stays short and bushy, filling in dense, chunky, resin-soaked colas that carry that classic gassy OG aroma. Good airflow and a carbon filter are worth having indoors, since this one gets pungent.
Indoors it is a strong producer at around 550 g/m², while outdoors it gives a more modest 45-90 g per plant, so plan your setup around where it performs best. Give the dense colas light support as they fatten, keep the canopy open so light reaches the lower buds, and harvest when most trichomes have turned cloudy for the fullest, gassiest expression.
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 stops the dense, resinous buds staying damp in the middle while the outside dries out, which protects both the diesel aroma and the heavy trichome coat.
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 is what brings the berry, citrus and diesel notes forward and smooths out this classic OG smoke, which is exactly what a strain with this heritage deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. OG Kush Fast Version is a very resinous, high-trichome plant, so its trim is excellent for making dry sift, bubble hash or rosin. That gives you a bonus run of pungent, gassy concentrate from material most growers would otherwise throw away.
Flavor and Terpenes
OG Kush Fast Version has a bold, moreish profile: a gassy diesel punch lifted by berry and citrus, the unmistakable OG character in a faster package. It is a pungent, mouth-watering flavor rather than a light or floral one, and a good cure really rounds out that berry-citrus-and-diesel character in the jar and on the inhale.
It carries a rich, complex terpene profile. Myrcene lays down an earthy, berry-fruity base, caryophyllene brings the warm, peppery spice behind the diesel, limonene and citral add the bright citrus lift, while pinene gives a fresh pine edge and linalool a soft floral sweetness. Behind those sit terpineol, humulene, nerolidol, terpinolene and more, filling out the depth and complexity of its aroma.
Effects and Best Use
With its high 20-24% THC and 75% indica make-up, OG Kush Fast Version delivers a strong, two-sided experience. It is reported as happy, euphoric and relaxed: a bright, mood-lifting euphoria up front that settles into a heavy, comfortable, full-body relaxation. This is a potent strain, so a little goes a long way, especially if you have a lower tolerance.
That balance makes it a classic end-of-day strain, good for unwinding in the evening while still feeling cheerful and content. The combination of true OG Kush character, a fast finish, a strong indoor yield and that pungent diesel flavor is exactly why this Fast Version is such a satisfying grow.
Common Problems and Pro Tips
The main thing to plan for is where you grow it. This Fast Version is a strong indoor producer but far more modest per plant outdoors, so if yield matters, run it in a tent where you can control light and climate. Its quick 7-9 week finish also makes it a great fit for cooler regions or for squeezing in an extra indoor cycle.
Its dense, gassy indica buds are the other thing to manage. That tight structure can trap moisture, so keep humidity low through flower, run good airflow over and under the canopy, and inspect the fattest colas as harvest nears to stay ahead of mould. A ScrOG net or light low-stress training opens the bushy plant up and lifts the heavy lower buds into the light.
As a pro tip, let this one finish properly to get the most from its 20-24% THC: follow the trichomes rather than the calendar. Keep the feed moderate rather than heavy so you don’t mute the diesel and citrus terpenes, run a clean plain-water flush in the final one to two weeks, then dry slowly and cure for three to four weeks for the richest, gassiest flavor.
FAQ
Is OG Kush Fast Version an autoflower?
No. Despite the fast-flowering genetics in its background, it is a photoperiod plant, so it flowers on a light change rather than on age. You grow it under long days, then switch to a 12/12 light cycle to start bloom. What it gives you is a faster finish, around 7-9 weeks, not autoflowering behaviour.
How much THC does OG Kush Fast Version have?
It is a high-THC strain, testing at around 20-24%. That gives it a strong, potent effect rather than a mild one. Combined with its 75% indica genetics, the result is a happy, euphoric lift settling into a heavy body relaxation, so start with a small amount if your tolerance is low.
How long does OG Kush Fast Version take to flower?
A quick 7-9 weeks once you switch to a 12/12 light cycle, which is faster than the original OG Kush. It is a Fast Version, so it blooms on the light change rather than on age but finishes sooner, filling in dense, resinous, gassy colas over that short flowering window.
What does OG Kush Fast Version taste like?
It has a bold, gassy flavor: a diesel punch lifted by berry and citrus, the classic OG character. Caryophyllene drives the peppery diesel note and myrcene the earthy-berry base, while limonene and citral add the bright citrus lift and pinene a fresh, clean edge on top.
Is OG Kush Fast Version good for beginners?
Yes. It is beginner-friendly: compact, fast at 7-9 weeks and forgiving, and being feminized there is no need to sex the plants. The main things to watch are airflow around its dense, gassy buds and low humidity late in flower, plus growing it indoors to get the biggest yield.
How much does OG Kush Fast Version yield?
Indoors it is a strong producer at around 550 g/m², while outdoors it is more modest at 45-90 g per plant. Results depend on light, pot size and canopy health, so for the biggest harvest grow it in a tent, support the dense colas and use a ScrOG net to spread the canopy.
