Sirius Black makes an unforgettable first impression with dark, richly colored buds, a frosty coat of resin, and a deeply soothing Indica-led character. Its 60% Indica, 40% Sativa balance brings a calm body feel with a happy, euphoric lift. For evening wind-downs and growers seeking striking, resin-heavy flowers, this variety stands out.

Its lineage comes from a cross between two secret strains, shaped by diverse genetics and an OG Kush heritage. The result is a mostly Indica hybrid with a distinctive profile and a reputation for exceptionally dark, purple-toned flowers. Sirius Black carries an air of mystery right through to harvest.

Expect a layered blend of citrus, ripe fruit, Kush, and wood. Sweet grape and dark-berry notes lead the aroma, followed by musky hash and warm, earthy depth. The smoke is smooth and soft, with a bold flavor that lingers.

Sirius Black tests at 15–25% THC and pairs a cheerful, euphoric mood with pronounced physical relaxation. Its effects lean calm and sleepy, making it a natural choice for quiet evenings. The variety is also sought by people looking for support with discomfort, tension, or sleep.

Myrcene brings ripe berry sweetness and a musky, calming character. Caryophyllene adds peppery wood and Kush spice, while limonene contributes a bright citrus accent. Together, these terpenes make Sirius Black a compelling pick for savoring its rich flavor, exploring resinous flower, or crafting concentrates.

These feminized seeds grow into female plants, helping growers focus their garden on flower production. Sirius Black is listed as beginner-friendly and performs indoors or outdoors in a temperate climate. Grassfarmer backs every order with a germination guarantee, so you can start with confidence.

Give seedlings a clean, well-aerated growing medium and steady light as they establish. Perlite, peat, or coco coir can help support moisture management. Keep conditions consistent, watch for pests early, and adjust care as plants move from seedling to vegetative growth.

Sirius Black develops a sturdy central stem with branching growth and can reach around 1.5 m. Indoors, a ScrOG setup can help create an even canopy and open light to lower flowers. Maintain good airflow and gradually lower humidity as flowering progresses to protect dense buds.

Flowering takes about 9–10 weeks. Indoor growers can expect around 400–500 g/m², while outdoor plants may produce 400–500 g each under favorable conditions. In the Northern Hemisphere, outdoor harvest typically arrives in October. Expect firm, resin-coated flowers with the dark colors that make this strain so memorable.

Order Sirius Black from Grassfarmer in small or bulk quantities, with fast, discreet shipping and guaranteed delivery in the USA, Canada, the European Union, and the U.K. Our breeders select premium genetics, and we offer them at some of the lowest prices online. Bring home the dark, calming character of Sirius Black and make room for a standout harvest.

Attributes

Climate Temperate
Effects Relaxed, Sleepy, Euphoric
Flavors Citrus, Fruity, Kush, Woody
Flowering Time 9–10 weeks
Genetics 60% Indica / 40% Sativa
Harvest Month October
Height 4.92 ft | 1.5 m
Indoor Yield 1.31–1.64 oz/ft² | 400–500 g/m²
Lineage Secret
Medicinal Arthritis, Insomnia, Pain
Outdoor Yield 14.11–17.64 oz/plant | 400–500 g/plant
Sex Feminized
THC 15%–25% (High)
Terpenes Caryophyllene, Myrcene, Limonene