Original AK Auto brings one of the most famous names of the 1990s into the fast autoflower era. Fast Buds paired AK47 from Serious Seeds with its own Fast Buds Auto #1 and worked the line to a stable F4 feminized generation. The goal was to keep the classic AK shape and lively high while adding better resin output, uniformity, and reliable autoflowering.
It is part of Fast Buds’ Originals line, the breeder’s collection of autoflower versions of legendary strains. Like every auto, it needs no switch to 12/12. Give it 18/6 or 20/4 from start to finish and it wraps up in around 9 weeks from seed.
Fast Buds puts it in its XL size class at 80-100 cm (31-40 in). The plants grow very evenly, which makes close spacing and a tidy canopy easy. Expect 400-500 g/m² (1.3-1.6 oz/ft²) indoors and 50-170 g (2-6 oz) per plant outdoors.
A Uniform Plant for Tight Canopies
Consistency is the big selling point here. Seedlings from the same pack tend to grow to a similar height and shape, so a sea-of-green setup or a crowded tent fills in neatly without one plant shading the rest. That predictability is just as handy for commercial runs as it is for a first grow.
Buds form as long, tightly stacked spears with a silvery frost that spreads well into the sugar leaves. Fast Buds notes that the pedigree helps the plant handle harsher environments, so it holds up outdoors in less than perfect weather too.
Feed lightly in the first weeks and raise nutrients gradually once flowers start to stack. Because the plants stay so even, a single light height works for the whole tent, which keeps the setup simple.
Old-School Taste and a Bright Sativa Lift
The nose is grounded and classic: forest pine, earthy undertones, soft floral notes, and a squeeze of lemon. It is the kind of terpene mix that reminds longtime smokers of the coffee shop menus of decades past.
Customer feedback points to a happy, uplifted mood first, with a good dose of energy and creativity riding alongside a gentle sense of calm. With up to 21% THC, it is lively enough for daytime projects and social plans. The resin also presses and washes well, giving clean, aromatic concentrates.
Original AK Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | AK47 from Serious Seeds x Fast Buds Auto #1 (F4 Feminized Autoflower) |
| Indica/Sativa | 60% Sativa / 40% Indica |
| THC | Up to 21% |
| CBD | < 1% |
| Effect | Happy, uplifted, energetic, creative |
| Flavor | Lemon, pine, earth, floral |
| Indoor yield | 400-500 g/m² (1.3-1.6 oz/ft²) |
| Outdoor yield | 50-170 g/plant (2-6 oz/plant) |
| Seed to harvest | 9 weeks (light schedule 18/6 or 20/4, no switch needed) |
| Height | 80-100 cm (31-40 in), size class XL |
| Climate | Indoor, outdoor, greenhouse; tolerates harsher environments |
| Best cultivation technique | SOG, LST, close spacing |
FAQ
What are the genetics of Original AK Auto?
Fast Buds crossed AK47 from Serious Seeds with Fast Buds Auto #1 and refined it into an F4 feminized autoflower. It is 60% sativa and 40% indica.
How long does Original AK Auto take to finish?
About 9 weeks from seed to harvest. Run it under 18/6 or 20/4 the whole way; there is no flowering switch.
How big does Original AK Auto get?
It is in Fast Buds’ XL size class, reaching 80-100 cm (31-40 in). Its even, uniform growth makes it easy to fit several plants into one tent.
What yield does Original AK Auto produce?
Fast Buds lists 400-500 g/m² (1.3-1.6 oz/ft²) indoors and 50-170 g (2-6 oz) per plant outdoors.
Is Original AK Auto suitable for beginners?
Yes. Fast Buds describes it as very easy to grow and able to handle harsher conditions, which makes it a forgiving choice for new growers.
What does Original AK Auto taste like?
Expect an old-school mix of lemon, fresh pine, earth, and light floral notes, with a smooth, clean finish.
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