How to Grow Girl Scout Cookies Fast Version (GSC)
Girl Scout Cookies Fast Version is a quicker-finishing take on the world-famous GSC, keeping the sweet, dessert-like character while shaving weeks off the harvest. This balanced 50/50 hybrid pairs a blueberry, grape and sweet flavor with a very high 23-28% THC, and a creative, energetic, focused effect, on a compact, high-yielding plant.
Made by crossing Girl Scout Cookies with a fast-flowering parent, it keeps the celebrated GSC genetics, Girl Scout Cookies being an OG Kush x Durban Poison cross, while speeding up the finish. As a true 50/50 hybrid of indica and sativa, it balances a bright, uplifting head with a comfortable body feel, all in a faster package.
Recommended Strains
Girl Scout Cookies Fast Version
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THC | 23% - 28% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Animal Cookies
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THC | 22% - 27% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
It is beginner-friendly, compact and a strong producer, which makes it an easy way to grow a legendary cookies strain. You can see the full genetics and buy Girl Scout Cookies Fast Version seeds on the strain page, and browse more of our fast-flowering seeds alongside it.
Strain Profile at a Glance
| THC | High (23-28%) |
|---|---|
| Lineage | Girl Scout Cookies (OG Kush x Durban Poison) x fast-flowering parent |
| Type | Fast Version (feminized, not autoflower) |
| Genetics | 50% Indica / 50% Sativa |
| Climate | Tropical |
| Flowering time | 8-10 weeks |
| Harvest | All season |
| Height | 3.94 ft / 1.2 m |
| Yield indoor | 1.31-1.8 oz/ft² (400-550 g/m²) |
| Yield outdoor | 21.16-35.27 oz/plant (600-1000 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Blueberry, Grape, Sweet |
| Effects | Creative, Energetic, Focused |
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 8-10 weeks, which is faster than the original GSC. Being feminized, every seed grows into a flowering female, so there is no need to sex the plants. Because it finishes fast and stays compact, it is a flexible, all-season choice that can fit more than one run in a good season.
Climate and Where to Grow It
Girl Scout Cookies Fast Version does best in a warm, sunny, tropical climate with plenty of light and good airflow. It is a short, bushy plant at around 1.2 m, so it fits small tents and discreet spots easily, while its quick finish is a real advantage in cooler regions where it can beat the worst of the autumn damp.
Indoors, 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. Outdoors it can be a big producer in a strong, sunny season, so give it a good spot with as much direct sun as possible to reach its full potential.
Keep humidity in check to protect its dense, resinous, sweet-smelling 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 hybrid 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 sweet berry-and-grape 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 8-10 weeks, faster than a standard photoperiod strain. As a balanced hybrid, Girl Scout Cookies Fast Version stays compact and bushy while filling in dense, resin-coated, sweet-smelling colas, often with purple hints from its cookies heritage as the nights cool. A little cold snap late in flower can help bring that colour out.
Yields are strong: around 400-550 g/m² indoors and a big 600-1000 g per plant outdoors in a strong season, depending on light, pot size and canopy health. Give the dense colas light support as they fatten, keep the canopy open with a ScrOG net so light reaches the lower buds, and harvest when most trichomes have turned cloudy for the fullest, sweetest 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 sweet 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 blueberry, grape and sweet dessert notes forward and smooths the smoke, which is exactly what a flavor-led cookies strain like this one deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Girl Scout Cookies 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 sweet, berry-grape concentrate from material most growers would otherwise throw away.
Flavor and Terpenes
Girl Scout Cookies Fast Version is all about dessert: a sweet, fruity flavor led by blueberry and grape, with the rich, cookie-sweet character the GSC line is famous for. It is a smooth, moreish taste rather than a sharp or gassy one, and a good cure really brings that berry-grape sweetness forward in the jar and on the inhale.
It carries a rich, complex terpene profile. Myrcene lays down a ripe, berry-fruity base, linalool adds a soft, floral, grape-like sweetness, and caryophyllene brings a warm, peppery spice underneath. Pinene gives a fresh, clean edge, terpinolene a fruity brightness and humulene an earthy depth, with terpineol, nerolidol, borneol and more rounding out the complexity behind that sweet, cookie-like aroma.
Effects and Best Use
With its very high 23-28% THC and balanced 50/50 make-up, Girl Scout Cookies Fast Version delivers a strong, well-rounded experience. It is reported as creative, energetic and focused: a bright, uplifting, clear-headed lift that sparks ideas and conversation, balanced by a comfortable body feel from its indica half. This is a potent strain, so a little goes a long way, especially if you have a lower tolerance.
That balance makes it versatile, good for a creative, productive afternoon or a social evening when you still want to feel engaged. The combination of a legendary cookies flavor, a fast finish, a big yield and serious potency is exactly why this GSC Fast Version is such a rewarding grow.
Common Problems and Pro Tips
The main thing to respect with this strain is its potency. At 23-28% THC it sits at the strong end, so grow it to finish properly rather than rushing it, and go easy when you try the cured result. The fast bloom is a bonus, not a reason to harvest early, since an early cut trades away a lot of that flavor and strength.
Its dense, resinous buds are the other thing to manage. That tight, chunky 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. Because it stays short and bushy, a ScrOG net or light low-stress training really helps spread the canopy and lift the lower buds into the light.
As a pro tip, let this one finish on the trichomes rather than the calendar to get the most from its 23-28% THC, and a cool night or two late in flower can deepen any purple colour. Keep the feed moderate rather than heavy so you don’t mute the sweet berry terpenes, run a clean plain-water flush at the end, then dry slowly and cure for three to four weeks.
FAQ
Is Girl Scout Cookies 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 8-10 weeks, not autoflowering behaviour.
How much THC does Girl Scout Cookies Fast Version have?
It is a very high-THC strain, testing at around 23-28%. That puts it among the stronger options you can grow, with a powerful, well-rounded effect. Combined with its balanced 50/50 genetics, it stays bright and clear-headed, so start with a small amount if your tolerance is low.
How long does Girl Scout Cookies Fast Version take to flower?
A quick 8-10 weeks once you switch to a 12/12 light cycle, which is faster than the original GSC. It is a Fast Version, so it blooms on the light change rather than on age but finishes sooner, filling in dense, resinous, sweet-smelling colas over that short flowering window.
What does Girl Scout Cookies Fast Version taste like?
It has a sweet, fruity flavor led by blueberry and grape, with the rich, cookie-sweet character GSC is known for. Myrcene drives the ripe berry base and linalool a soft, grape-like floral sweetness, while caryophyllene adds a warm, peppery spice and pinene a fresh, clean edge on top.
Is Girl Scout Cookies Fast Version good for beginners?
Yes. It is beginner-friendly: compact at around 1.2 m, fast at 8-10 weeks and forgiving, and being feminized there is no need to sex the plants. The main things to watch are airflow around its dense buds and low humidity late in flower to protect the resinous colas.
How much does Girl Scout Cookies Fast Version yield?
Yields are strong: around 400-550 g/m² indoors and a big 600-1000 g per plant outdoors in a good season. Results depend on light, pot size and canopy health, so give it strong light, support the dense colas and use a ScrOG net to make the most of a compact plant.
