The specs in one line: 20-25% THC, <1% CBD, 8-10 weeks flowering, 400-500g/m2 reported. Best indoor or outdoor. easy grow.

Eight growers logged consistent pulls of 400–500 g/m² from Grade 10 Auto without once touching a light timer — that alone tells you what Mephisto Genetics was going for with this one. Running 8–10 weeks from seed to harvest, it fits neatly into a Canadian outdoor window or a perpetual indoor tent, and the easy difficulty rating holds up: plants stay compact, don't throw many surprises, and respond well to light topping if you want to open the canopy.

THC comes in at 20–25%, so the effect is firmly on the stronger side — expect a heaviness that starts behind the eyes and settles into the body. The flavor profile is straightforward earthy with no fruitiness to speak of, which some people find refreshing after chasing terpene-heavy novelties. Works in soil or coco, indoors or out.

Best suited to newer growers who want a no-fuss autoflower that still punches well above entry-level potency.

Genetics & Lineage

Grade 10 Auto traces its genetics to Grade 10 (Mephisto Genetics). 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 Mephisto Genetics, 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

Grade 10 Auto 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 Grade 10 Auto

Grade 10 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 8-10 weeks with yields of 400-500g/m2. Plants typically reach 60-100cm 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

Grade 10 Auto features a earthy terpene profile that develops complexity throughout the flowering cycle. The complex aromatic bouquet develops fully after proper curing. 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, Grade 10 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 Grade 10 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 Grade 10 Auto from Seennabis?

When you purchase Grade 10 Auto through Seennabis, you are buying directly from Mephisto Genetics — The autoflower specialist. Every order includes verified genetics, discreet shipping, and responsive seller support.