Spec sheet first — strain: hybrid, seed type: autoflower, THC: 18-24%, yield band: medium, environment: indoor or outdoor.

Lineage: Dutch Passion's Auto Ultimate program, bred specifically to push autoflower yields into territory that once required photoperiod plants. That work shows at harvest — growers are pulling 400–500 g/m² in 10 to 11 weeks from seed, which is a genuine number for an auto, not a breeder's best-case scenario. THC tests consistently land in the 18–24% range, and the buds carry a clean citrus-floral scent that stays noticeable through cure. The plant handles both indoor tents and outdoor plots without fuss, making it a workable choice for Canadian growers who want to squeeze a late-season run before frost closes things down.

Rated easy by Dutch Passion, so first-time auto growers won't be fighting a difficult feeder or a finicky environment — but the size of the plants means you'll want to plan canopy space ahead of time.

Genetics & Lineage

Auto Ultimate traces its genetics to Auto Ultimate (Dutch Passion 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 Dutch Passion, 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 24%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Auto Ultimate delivers THC levels of 18-24%, 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 Auto Ultimate

Auto Ultimate 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 10-11 weeks total with yields of 400-500g/m². Plants typically reach 60-120cm 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

Auto Ultimate features a citrus, floral terpene profile that develops complexity throughout the flowering cycle. Bright lemon and orange zest punch through on the inhale, with a tangy, refreshing finish. 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, Auto Ultimate 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 Auto Ultimate?

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 Auto Ultimate from Seennabis?

When you purchase Auto Ultimate through Seennabis, you are buying directly from Dutch Passion — The world's original feminized seed pioneers, founded in Amsterdam in 1987. Every order includes verified genetics, discreet shipping, and responsive seller support. Dutch Passion has completed over 126 sales.