The specs in one line: 19% THC, <2% CBD, 7-9 weeks flowering, 500g/m2 reported. Best indoor or outdoor. easy grow.

Lineage: 70% sativa / 30% indica, built on Original Kush Seeds' own stock — which makes this autoflower a genuine outlier in a catalog better known for heavy indicas like Master Kush. It finishes in 7–9 weeks from seed, no light-schedule management needed, and pulls around 500 g/m² when conditions are dialled in. The flavour leans sweet without much complexity, but the 19% THC and sativa-forward effect profile keep things functional rather than sedating — useful if you're growing for daytime use.

Plant height stays manageable (expect 60–100 cm), so it fits comfortably under a tent or on a sheltered outdoor patio through a Canadian summer. Rated easy, it forgives inconsistent feeding better than most photoperiods. Good fit for newer growers who want a fast-finishing, higher-THC crop without committing to a full photoperiod cycle.

Genetics & Lineage

Grapefruit Auto traces its genetics to 70% Sativa/30% Indica (Original Kush Seeds). This sativa-dominant autoflower seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Original Kush Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and euphoric effects, making this strain ideal for evening use and unwinding after a long day. The body-centered stone builds gradually, easing tension and promoting deep physical relaxation. With THC levels reaching 19%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Grapefruit Auto delivers THC levels of 19%, placing it in the moderate-to-strong range that most regular consumers find comfortable. CBD content is minimal, so the psychoactive effects are front and center. The onset typically arrives within minutes, starting as a cerebral buzz that gradually expands.

Growing Grapefruit Auto

Grapefruit Auto is rated as easy difficulty, making it an excellent choice for first-time growers. The plants are resilient, forgiving of common mistakes like overwatering or inconsistent feeding schedules.

Indoor Growing: Expect a flowering time of 7-9 weeks with yields of 500g/m2. Plants typically reach 60-100cm indoors. This strain responds exceptionally well to SCROG (Screen of Green) and LST (Low Stress Training), which can boost yields significantly. Maintain temperatures between 68-80°F with relative humidity around 45-55% during flowering.

Outdoor Growing: This versatile strain performs well in both indoor and outdoor environments. Outdoor growers in warm climates can expect harvest from late September through October. Watch for humidity during late flowering to prevent bud rot, especially with the dense, heavy buds this strain produces.

Flavor, Aroma & Terpene Profile

Grapefruit Auto features a sweet terpene profile that develops complexity throughout the flowering cycle. A smooth, candy-like sweetness defines the flavor, with subtle complexity on the exhale. The aroma intensifies significantly during the final 2-3 weeks of flowering — carbon filtration is recommended for indoor grows requiring discretion.

Medical Benefits

While individual experiences vary, Grapefruit Auto is commonly reported to help with stress relief, chronic pain, insomnia, and muscle tension. The deeply relaxing effects make it a popular choice among medical users seeking nighttime relief. As with any cannabis strain, start with a low dose and increase gradually. Consult a healthcare professional before using cannabis for medical purposes.

Who Should Grow Grapefruit Auto?

This strain is ideal for beginner growers looking for a reliable, low-maintenance plant that delivers consistent results without advanced techniques. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Grapefruit Auto from Seennabis?

When you purchase Grapefruit Auto through Seennabis, you are buying directly from Original Kush Seeds — Kush specialist — OG Kush, Hindu Kush, Bubba Kush, Master Kush, Critical Kush. Every order includes verified genetics, discreet shipping, and responsive seller support.