Why this one matters: hybrid genetics with a 17-23% THC ceiling and fruity/citrus-led terps. 9-11 weeks total flowering, indoor or outdoor.

Lineage: Triangle Kush × Strawnana, then crossed with Sensi Seeds' original Ruderalis Indica — the same line Nevil Schoenmakers developed in the 1980s — gives C4 Automatic a surprisingly clean pedigree for an autoflower. Plants stay compact and bushy with tight internodal spacing, so you're not fighting height in a small tent or closet. The single dominant cola runs the upper half of the plant while thick lateral branches stack secondary buds below it. THC tests typically come in between 17–23%, and yields can reach 450–600 g/m² indoors when given adequate light. The aroma leans fruity and citrus-forward with a diesel edge that sharpens as buds cure.

Because the total cycle wraps up in 9–11 weeks with no light-schedule changes required, this one fits naturally into a perpetual harvest rotation or a first-time indoor setup where simplicity matters more than maximizing canopy space.

Genetics & Lineage

C4 Automatic traces its genetics to Triangle Kush × Strawnana. This hybrid-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 Sensi Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily euphoric and relaxed 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

C4 Automatic delivers THC levels of 17-23%, 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 C4 Automatic

C4 Automatic 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 9-11 weeks total with yields of 450-600g/m². Plants typically reach 50-80cm 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

C4 Automatic features a fruity, citrus, diesel, sweet 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, C4 Automatic 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 C4 Automatic?

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 C4 Automatic from Seennabis?

When you purchase C4 Automatic through Seennabis, you are buying directly from Sensi Seeds — The world's oldest cannabis seed bank, founded in Amsterdam in 1985. Every order includes verified genetics, discreet shipping, and responsive seller support. Sensi Seeds has completed over 177 sales.