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

Mephisto Genetics lists this at $39.60 — above the median of $30.60 across 4 listings. Pack options: 3-seed at $39.60, 5-seed at $66.00, plus larger sizes.

Smell-first: crack one of these nugs and you get a split-second debate between ripe fruit and sharp diesel before the two settle into something that actually works together. Old School Purple Nuggets Auto comes from Mephisto Genetics and sits at 20–25% THC with yields measured around 400–500g/m² when conditions are dialed in. The 8–10 week flower window is about as fixed as it gets with autos, which means less guesswork and more predictability across your grow calendar. Difficulty sits firmly in the easy category, so the genetics don't demand much—consistent watering, decent light, and reasonable temps will get you there whether you're running indoors under LEDs or outdoors in a sunny yard. The purple expression varies by temperature, but cooler nights late in flower tend to pull out the color if that matters to you.

Best suited for newer growers who want a reliable first auto run without sacrificing potency.

Genetics & Lineage

Old School Purple Nuggets Auto traces its genetics to Old School Purple Nuggets (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

Old School Purple Nuggets 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 Old School Purple Nuggets Auto

Old School Purple Nuggets 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

Old School Purple Nuggets Auto features a fruity, diesel 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, Old School Purple Nuggets 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 Old School Purple Nuggets 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 Old School Purple Nuggets Auto from Seennabis?

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