Why this one matters: hybrid genetics with a 20-25% THC ceiling and fruity/diesel-led terps. 9-11 weeks flowering, indoor or outdoor.

Smell-first: the cure on this one opens with a fruit-forward sweetness that sharpens into diesel as the jar sits — a combination that makes the trim room smell like a corner store freezer next to a gas pump. GSC from Kannabia runs 9–11 weeks to finish and pulls 400–500 g/m² under decent light, which puts it in solid mid-range territory for a feminized strain sitting at 20–25% THC.

Moderate-difficulty growers should manage it fine indoors or out, though outdoor runs in shorter Canadian seasons will want to pop these early — late April under supplemental light gives the flowering window enough room before October frost. The high starts cerebral and social, then gradually softens into something heavier. Good for evenings, functional enough for a slow afternoon. Best suited to growers who want a recognizable, well-documented strain with predictable structure rather than something experimental.

Genetics & Lineage

GSC traces its genetics to GSC (Kannabia Seeds). This hybrid-dominant feminized seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Kannabia 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 23%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

GSC delivers THC levels of 20-25%, 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 with a balanced head-and-body experience that evolves over time.

Growing GSC

GSC is rated as moderate difficulty, making it suitable for growers with some experience. Basic knowledge of nutrient schedules, pH management, and environmental controls will help maximize results.

Indoor Growing: Expect a flowering time of 9-11 weeks with yields of 400-500g/m2. Plants typically reach 100-180cm indoors. Standard training techniques like topping and LST will help manage height and improve light penetration. 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 dense flower formations.

Flavor, Aroma & Terpene Profile

GSC features a fruity, diesel, sweet, earthy terpene profile that develops complexity throughout the flowering cycle. Sweet berry and grape notes dominate the inhale, with a sugary exhale that lingers on the palate. 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, GSC 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 GSC?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy GSC from Seennabis?

When you purchase GSC through Seennabis, you are buying directly from Kannabia Seeds — Spanish seed company from Granada (since 2002). Every order includes verified genetics, discreet shipping, and responsive seller support.