Onyx by Short Stuff Seeds
A powerful autoflowering hybrid bred for size, strength, and standout resin production.
Onyx is a flagship strain from Short Stuff’s next-generation autoflowering collection, renowned for its impressive yields, potent effects, and diverse genetic background. With influences from AK47, White Russian, Diesel, and more, Onyx is engineered for growers seeking quality and power in a mid-sized auto.
Strain Information:
Strain Name: Onyx
Strain Breeder: Short Stuff Seeds
Lineage: AK47 × White Russian × Diesel × Unspecified Hybrids
Genetics: Balanced Indica / Sativa
Seed Type: Autoflowering Feminised
Flowering Type: Autoflower
Flowering Time: 9–10 weeks from seed (indoor and outdoor)
Effect: Strong, long-lasting stone; intense body and mental relaxation
Aroma: Pungent, with sour diesel undertones
Taste: Sweet, fruity with fuel notes
Height: 50–100 cm
Yield: 30–90 grams per plant
Strain Description:
Onyx is a high-performing autoflower born from one of the largest selection programmes carried out by Short Stuff Seeds. Its mysterious genetic composition includes well-known heavyweights like AK47, White Russian, and Diesel, which give the plant its vigour, frosty finish, and signature punch. Designed for potency and density, Onyx delivers chunky buds that glisten with trichomes, offering a hard-hitting body stone that’s ideal for evening use or experienced consumers. The flavour is fruity on the inhale, with rich earthy and fuel-like backnotes. Thanks to its complex ancestry, Onyx offers both physical relaxation and a lingering cerebral buzz.
Growing Information:
Onyx is part of Short Stuff’s upgraded autoflowering generation, developed to rival traditional photoperiod strains in potency and structure. It grows to a moderate height of 50–100 cm and is highly branchy, making it suitable for topping or low-stress training (LST). Flowering completes in approximately 9 to 10 weeks from germination, with a yield potential of 30–90 grams per plant depending on environment and care. The tight bud formation and heavy resin production make it a popular choice for extract enthusiasts.
Strain Flavour and Aromas:
The aroma of Onyx is a pungent mix of fruit, earth, and diesel, inherited from its diverse parentage. The diesel presence is sharp and skunky, while the White Russian lineage contributes sweetness and richness. On the tongue, expect a complex profile—starting fruity and smooth, then settling into a musky, fuel-like aftertaste. Likely terpene profiles include myrcene, caryophyllene, and limonene, creating a profile that’s both relaxing and mood-lifting.
Strain Lineage:
Onyx is built from a complex combination of renowned strains: AK47 adds potency and a classic knockout stone, Diesel brings a gassy aroma and sativa spark, while White Russian lends its snowy resin production and tightly packed bud structure. The breeders also hint at additional hybrids in its background, suggesting a broad genetic pool that has been meticulously stabilised for reliable performance.
Strain Summary:
A standout in the world of autoflowers, Onyx offers the kind of structure, yield, and quality traditionally expected from photoperiod strains. Its balanced high, intense flavour, and manageable growth make it a favourite among hobby growers and experienced cultivators alike. Whether grown indoors or out, Onyx consistently produces rich, sticky buds and a powerful full-body effect that earns its place in any collection.
Disclaimer: All seeds sold at Breeders Collective are strictly intended as souvenirs and for preservation purposes. We do not condone or encourage breaking any laws regarding cannabis. It is your responsibility to research and adhere to the laws in your jurisdiction regarding the purchase, possession, and use of cannabis seeds.