Pineapple OG Auto builds on one of Fast Buds’ best-known fruit strains. The breeder took its classic Pineapple Express Auto and crossed it with an OG Kush cut, bringing a sturdier, high-performing structure to a line already loved for flavor. The result is a surprisingly productive F4 feminized autoflower with up to 30% THC.
Genetically it leans sativa, at 65% sativa and 35% indica. As an autoflower, it begins blooming by age rather than light, so 18/6 or 20/4 can run from start to finish. Expect to harvest about 9 weeks from seed.
This is a big auto. Fast Buds lists it as XXL, with plants reaching 80-150 cm (31-59 in). Indoors it can produce 425-550 g/m² (1.4-1.8 oz/ft²), and outdoors each plant can give 60-300 g (2-10.5 oz).
Growth is strong and plant size is above average across the population, so leave plenty of headroom.
Two Phenotypes, One Pineapple Profile
Fast Buds sees two main expressions in this line. The first is the more standard type: tall, green plants with dense, well-formed flowers. The second goes further, stretching even taller, with darker green tones and heavier bud stacking that produces large, solid colas from top to bottom.
Whichever you get, the aroma is the highlight. It leans strongly toward sweet pineapple, very close to the smell of a freshly opened can of pineapple: juicy, intense and very faithful to the real fruit, with a crisp, well-defined edge and a touch of sourness.
Growers most often report the effect as happy and relaxed, with an uplifted, creative mood and, for some, a pleasantly sleepy finish later on.
Yield, Resin and Training
Resin production is solid, so Pineapple OG Auto works for extraction as well as for flower. Its structure responds well to low-stress training: tie the main stem down early to keep height in check and bring the side branches up to an even canopy.
Use a large final container so the roots can support all that growth, and add support when the colas fill out. Good airflow in late flower helps protect those dense buds.
Pineapple OG Auto Characteristics
| Strain type | Autoflowering (feminized) |
| Genetics | Pineapple Express Auto x OG Kush cut (F4) |
| Indica/Sativa | 65% Sativa / 35% Indica |
| THC | Up to 30% |
| CBD | Less than 1% |
| Effect | Happy, relaxed, uplifted, creative |
| Flavor | Sweet pineapple, sour, tropical |
| Indoor yield | 425-550 g/m² (1.4-1.8 oz/ft²) |
| Outdoor yield | 60-300 g/plant (2-10.5 oz/plant) |
| Seed to harvest | About 9 weeks |
| Height | 80-150 cm (31-59 in), XXL size class |
| Climate | Indoors, outdoors, greenhouse or mixed-light; any season with warm, stable weather outdoors |
| Best cultivation technique | LST, large container and branch support |
FAQ
What are the parents of Pineapple OG Auto?
Fast Buds crossed its classic Pineapple Express Auto with an OG Kush cut, stabilized as an F4 feminized autoflower.
How is it different from Pineapple Express Auto?
Pineapple OG Auto is larger and more productive, with THC up to 30% and an XXL size class, while keeping a strong, juicy pineapple aroma.
What phenotypes can I expect?
One phenotype is tall and green with dense flowers. The other is even taller, with darker green leaves and heavier bud stacking.
How tall does Pineapple OG Auto grow?
Fast Buds lists 80-150 cm (31-59 in). Plan for plenty of vertical room or train the plant early.
How long does it take?
About 9 weeks from seed to harvest, with no change in light schedule needed.
What yield can I expect?
Indoors, 425-550 g/m² (1.4-1.8 oz/ft²). Outdoors, about 60-300 g (2-10.5 oz) per plant.
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