King Louis XIII combines the legendary OG Kush genetics with fast-finishing autoflower traits, delivering a potent hybrid that reliably produces 500g/m² in just 9 weeks. This autoflower seeds strain reaches 100–160cm and carries a substantial 25% THC profile, generating euphoric and relaxed effects that transition into deep sleep—ideal for evening use. Expect earthy, pine-forward flavors on every harvest thanks to stable phenotypes from Original Harvest Seeds catalog. Moderate growing difficulty makes it accessible to intermediate cultivators seeking repeatable results without excessive technical demands. If you appreciate this lineage, explore Afghani Bullrider for another compelling indica-dominant cross from the same breeder.

Genetics & Lineage

King Louis XIII Auto traces its genetics to Proprietary cross (Original Harvest Seeds). 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 Original Harvest 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 25%, this is a potent strain recommended for experienced users — newcomers should start low and go slow.

THC Level & Potency

King Louis XIII Auto delivers THC levels of 25%, placing it in the high-potency category alongside powerhouses like Gorilla Glue and Girl Scout Cookies. 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 King Louis XIII Auto

King Louis XIII Auto 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 9-9 weeks with yields of 500g/m2. Plants typically reach 100-160cm 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

King Louis XIII Auto features a earthy, pine terpene profile that develops complexity throughout the flowering cycle. Sharp forest and resin notes create a fresh, invigorating flavor with earthy depth. 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, King Louis XIII 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 King Louis XIII Auto?

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 King Louis XIII Auto from Seennabis?

When you purchase King Louis XIII Auto through Seennabis, you are buying directly from Original Harvest Seeds — Catalog of original feminized and autoflower hybrids — clean genetics, stable phenotypes, designed for repeatable harvests across indoor and outdoor setups. Every order includes verified genetics, discreet shipping, and responsive seller support. Original Harvest Seeds has completed over 30,250 sales with a 4.7-star rating from 2,472 verified reviews.