Blackberry Auto is a dark, berry-scented Indica built for people who like their evenings slow. It also has a notable piece of history behind it: Fast Buds’ Blackberry Auto took first place at the Oregon Autoflower Cup, described by Fast Buds as the first autoflower cup held in the US.
The genetics come from Fast Buds’ Original Blueberry Auto. Breeders isolated a reverse Blackberry phenotype from that line and worked it into an F3 feminized autoflower with a locked-in phenotype, so plants show the traits that made the selection special. The balance is 75% Indica / 25% Sativa, with up to 23% THC and CBD under 1%.
As an autoflower, she needs no light switch at all. Keep her on 18/6 or 20/4 from start to finish and expect harvest in 9-10 weeks from seed. Fast Buds lists her in the XL size class at 70-120 cm (28-47 in), with yields of 450-600 g/m² (1.5-2 oz/ft²) indoors and 50-250 g (2-9 oz) per plant outdoors.
The plant grows dense and bushy with short internodal spacing and a clear central cola. Later in bloom, the buds swell into rounded, dark purple flowers coated in sticky trichomes, giving the whole plant a classic berry-bush look.
Forest Berries and Couch-Lock
Blackberry Auto smells like a basket of forest berries mixed with sweet kush. Blueberry and dark fruit dominate, supported by soft floral accents and an earthy base. The smoke is smooth and rich, and the kushy undertone gives it a grounded, mellow finish.
Consistent resin coverage and deep berry terpenes make it a good candidate for extraction too, producing smooth concentrates with a soft, kush-driven character.
The effect is unapologetically Indica: a potent, body-heavy relaxation that can slide into full couch-lock. Reported effects are dominated by relaxed, followed by happy and sleepy, which makes this a strain to save for the end of the day. Indica fans and seasoned consumers will feel right at home.
Why Growers Pick Blackberry Auto
Fast Buds recommends Blackberry Auto for first-time growers as well as Indica lovers. The compact, bushy structure is easy to keep under control, and the locked-in phenotype means less variation between plants. Light LST helps open up the dense canopy, and good airflow during the final weeks keeps the tight, resinous buds in good shape.
She performs indoors, outdoors, in greenhouses, and under mixed light, so you can grow her almost anywhere with decent sun or a good lamp.
Blackberry Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Original Blueberry Auto, reverse Blackberry phenotype isolation line F3 |
| Indica/Sativa | 75% Indica / 25% Sativa |
| THC | Up to 23% |
| CBD | Less than 1% |
| Effect | Heavy body relaxation, couch-lock, sleepy |
| Flavor | Forest berries, blueberry, sweet, earthy, kush |
| Indoor yield | 450-600 g/m² (1.5-2 oz/ft²) |
| Outdoor yield | 50-250 g/plant (2-9 oz/plant) |
| Seed to harvest | 9-10 weeks |
| Height | 70-120 cm (28-47 in), XL size class |
| Climate | Indoor, outdoor, greenhouse, and mixed-light setups |
| Best cultivation technique | Light LST, good airflow in late bloom |
FAQ
Did Blackberry Auto win an award?
Yes. Fast Buds’ Blackberry Auto took first place at the Oregon Autoflower Cup, which Fast Buds describes as the first autoflower cup in the US.
What are the genetics of Blackberry Auto?
It comes from Fast Buds’ Original Blueberry Auto, through a reverse Blackberry phenotype isolation line that was stabilized as an F3 feminized autoflower with a locked-in phenotype.
Is Blackberry Auto Indica or Sativa?
It is 75% Indica and 25% Sativa, with a heavy, relaxing, couch-lock effect.
How long does Blackberry Auto take from seed to harvest?
About 9-10 weeks. As an autoflower, it does not need a 12/12 switch, so you can use 18/6 or 20/4 the whole way.
Is Blackberry Auto good for beginners?
Yes. Its compact, bushy growth and stable phenotype make it a forgiving strain for first grows.
What does Blackberry Auto taste like?
Sweet forest berries and blueberry with floral accents, an earthy base, and a soft kush finish.
Reviews
There are no reviews yet.