GMO Auto marks a new direction for Fast Buds. After years of focusing on sweet, fruit-forward and Sherbet-style profiles, the breeder wanted something raw, savory and unmistakable in its autoflower lineup.
To get there, Fast Buds crossed a GMO clone sourced in California with its own Chemdog Auto, keeping the original terpene identity intact while bringing it into a stable F4 feminized autoflower. The result is 80% indica / 20% sativa with up to 28% THC.
There is no need to change the lights: 18/6 or 20/4 works for the whole run, and the plant finishes in about 10-11 weeks from seed, a little longer than many autos. Fast Buds lists it as XL, at 80-120 cm (31-47 in), with indoor yields of 450-600 g/m² (1.5-2 oz/ft²) and 50-200 g (2-7 oz) per plant outdoors.
This is a terpene-first auto, made for growers who want something completely different from the usual candy and fruit.
Old-School Funk in Auto Form
The profile stays very true to classic GMO. Expect sharp garlic and onion, a deep layer of earthy mushroom, herbal and spicy notes and a diesel kick. It is savory, pungent and unlike anything on a dessert menu. Not everyone will love it, and that is exactly the idea.
The effect leans heavily toward the body. Fast Buds growers most frequently report feeling relaxed, followed by happy and sleepy, with an appetite showing up for many. It is best kept for evenings and quiet nights in.
If you run a carbon filter, make sure it is in good shape before late bloom: this one is loud.
Structure and Wash Performance
GMO Auto grows into a medium, well-structured frame with solid branching, tight internodes and consistent results across the population. The flowers are a bit more open than in some of Fast Buds’ denser lines, a deliberate trade-off that protects the terps and keeps the plant faithful to the GMO it came from.
Where it really shines is in the wash: it is an excellent hash washer, so it is a strong pick for bubble hash and rosin makers. Use light LST early, keep humidity moderate and give it the extra week or two it needs to finish properly.
GMO Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | GMO Cut x Chemdog Auto (F4) |
| Indica/Sativa | 20% Sativa / 80% Indica |
| THC | Up to 28% |
| CBD | Less than 1% |
| Effect | Relaxed, happy, sleepy |
| Flavor | Garlic, onion, earthy mushroom, herbal, spicy, diesel |
| Indoor yield | 450-600 g/m² (1.5-2 oz/ft²) |
| Outdoor yield | 50-200 g/plant (2-7 oz/plant) |
| Seed to harvest | 10-11 weeks |
| Height | 80-120 cm (31-47 in), XL size class |
| Climate | Indoors, outdoors, greenhouse or mixed-light; any season with warm, stable weather outdoors |
| Best cultivation technique | Light LST, strong odor control |
FAQ
What are the genetics of GMO Auto?
A GMO clone sourced in California crossed with Fast Buds’ Chemdog Auto, stabilized as an F4 feminized autoflower.
What does GMO Auto smell like?
Savory and pungent: garlic, onion, earthy mushroom, herbal and spicy notes, plus diesel.
Is GMO Auto good for hash?
Yes. Fast Buds describes it as a great washer with resin-rich flowers, which makes it a strong choice for hash makers.
Why are the buds less dense than some autos?
The slightly open flower structure was kept on purpose to protect the terps and keep faith with the original GMO.
How long does GMO Auto take?
About 10-11 weeks from seed to harvest, with 18/6 or 20/4 light throughout.
What kind of effect does it have?
Growers most often report a relaxed, happy and sleepy effect, which suits evening use.
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