The specs in one line: 16-20% THC, <1% CBD, 9-10 weeks total flowering, 500-700g/m2 reported. Best indoor or outdoor. easy grow.

Greenhouse Seeds lists this at $23.33 — below the median of $25.98 across 48 listings. Pack options: 3-seed at $23.33, 5-seed at $33.05, plus larger sizes.

Lineage: Northern Lights × Green-O-Matic, bred under the Green House Seeds program, grounds this autoflower in one of the most reliably sedating gene pools in cannabis history. The original Northern Lights brought that heavy, long-lasting body effect; Green-O-Matic brought the autoflowering clock. What you get is a plant that wraps up its entire cycle in 9–10 weeks from seed, no light-schedule management required, and still pulls 500–700g/m² indoors when conditions are dialed in.

THC sits in the 16–20% range — enough to satisfy most evening smokers without tipping into uncomfortable territory. The smell runs earthy with a clean sweetness underneath, nothing sharp or chemical. Difficulty is rated easy, and that tracks: this one handles minor temperature swings and beginner feeding errors better than most photoperiod strains would. Works indoors or out. A solid starting point for first-time autoflower growers who want a calming, well-documented effect profile without chasing something exotic.

Genetics & Lineage

Northern Lights Auto traces its genetics to Northern Lights Auto (Green House Seeds 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 Greenhouse Seeds, each seed is selected for genetic stability, terpene expression, and vigor.

Effects & Experience

Users report primarily euphoric and relaxed 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 20%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Northern Lights Auto delivers THC levels of 16-20%, 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 Northern Lights Auto

Northern Lights 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 9-10 weeks total with yields of 500-700g/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 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

Northern Lights Auto features a earthy, sweet terpene profile that develops complexity throughout the flowering cycle. A smooth, candy-like sweetness defines the flavor, with subtle complexity on the exhale. 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, Northern Lights 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 Northern Lights 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 Northern Lights Auto from Seennabis?

When you purchase Northern Lights Auto through Seennabis, you are buying directly from Greenhouse Seeds — Renowned Strain Hunters founded by Arjan Roskam, 'The King of Cannabis'. Every order includes verified genetics, discreet shipping, and responsive seller support. Greenhouse Seeds has completed over 92 sales.