Quick read: 18-25% THC, 60-120cm mature height, 9-11 weeks total bloom. Genetics: Purple Haze (Seedsman genetics). Difficulty: easy.

Eight growers running indoor tents last season flagged this one as a reliable first autoflower — low maintenance, consistent finish, and no major sensitivity to beginner mistakes. Purple Haze Auto pulls 400–550 g/m² across a 9–11 week total cycle, which makes it a practical choice when you want two or three runs between April and October in shorter Canadian seasons. THC sits in the 18–25% range, leaning toward the higher end when dialled-in with proper light intensity. The pine and earthy nose is straightforward — nothing showy, just clean resin that holds up well through a slow cure.

Works in both indoor and outdoor setups, though outdoor growers in BC and Ontario have noted the autoflowering trait sidesteps the usual light-schedule headaches of transitional fall weather. Best suited to newer growers who want a forgiving strain that still produces respectable numbers without requiring a lot of intervention.

Genetics & Lineage

Purple Haze Auto traces its genetics to Purple Haze (Seedsman genetics). This indica-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 Seedsman, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily relaxed and sleepy 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

Purple Haze Auto delivers THC levels of 18-25%, 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 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing Purple Haze Auto

Purple Haze 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 9-11 weeks total with yields of 400-550g/m². Plants typically reach 60-120cm 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 40-50% 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

Purple Haze Auto features a pine, earthy 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, Purple Haze 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 Purple Haze 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 Purple Haze Auto from Seennabis?

When you purchase Purple Haze Auto through Seennabis, you are buying directly from Seedsman — One of the world's largest cannabis seed catalogs, carrying 4,000+ strains from 100+ breeders since 2003. Every order includes verified genetics, discreet shipping, and responsive seller support. Seedsman has completed over 185 sales.