Quick read: 20-25% THC, 60-100cm mature height, 8-10 weeks bloom. Genetics: Old School Blues (Mephisto Genetics). Difficulty: easy.

Mephisto Genetics lists this at $43.20 — the upper end of the comparison range (up to $39.60). Pack options: 3-seed at $43.20, 5-seed at $72.00, plus larger sizes.

Smell-first, this one announces itself early — a sharp citrus-pine resin that leans brighter than most autos and sticks to your fingers during trim. Old School Blues Auto is a Mephisto Genetics sativa-leaning autoflower sitting at 20–25% THC, which puts it firmly in the upper tier for an easy-rated variety. Growers running it in both tent and outdoor settings report 400–500g/m² finishing inside 8–10 weeks from sprout, which is a genuinely short turnaround for that kind of canopy weight.

The high reads cerebral and uplifting without the anxious edge some high-THC sativas bring — useful during the day, manageable for less-experienced users. Because it's rated easy and handles mixed environments, it works well as a confidence-builder for newer growers who still want meaningful numbers on the scale. Keep feeding moderate; this one doesn't need to be pushed hard to hit its potential.

Genetics & Lineage

Old School Blues Auto traces its genetics to Old School Blues (Mephisto Genetics). This sativa-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 Blues 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, starting as a cerebral buzz that gradually expands.

Growing Old School Blues Auto

Old School Blues 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 Blues Auto features a fruity, citrus, pine, floral 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 Blues 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 Blues 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 Blues Auto from Seennabis?

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