Spec sheet first — strain: hybrid, seed type: feminized, THC: 21%, yield band: low, environment: indoor or outdoor.

Lineage: Mendo Breath × Headband × Trainwreck — three NorCal staples that together produce a compact, resinous plant with more going on than its tidy 60–100 cm frame suggests. At 21% THC and a finish window of 7–9 weeks, Purple Arrow sits comfortably in the mid-season range that works well across most Canadian provinces without pushing into frost risk territory.

Yields land around 300 g/m², which is honest rather than spectacular — but the quality-to-effort ratio is what growers actually report noticing. The earthy-sweet profile leans toward damp forest floor with a mild sweetness underneath, nothing sharp or polarizing. Difficulty is moderate, so expect to manage canopy a little if you're running it indoors; outdoors it handles variable humidity reasonably well given the Trainwreck influence. A good pick for intermediate growers moving past entry-level autoflowers who want a feminized photoperiod strain with predictable structure and a reliable finish.

Genetics & Lineage

Purple Arrow traces its genetics to Proprietary cross (Mendocino Farms). This hybrid-dominant feminized seed produces plants that express the best traits of its parent lineage, delivering consistent results for growers of all experience levels. Bred by Mendocino Farms, 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 21%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

Purple Arrow delivers THC levels of 21%, 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 Purple Arrow

Purple Arrow is rated as moderate difficulty, making it suitable for growers with some experience. Basic knowledge of nutrient schedules, pH management, and environmental controls will help maximize results.

Indoor Growing: Expect a flowering time of 7-9 weeks with yields of 300g/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

Purple Arrow 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, Purple Arrow 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 Arrow?

This strain is ideal for intermediate growers ready to push their skills and be rewarded with superior results. If you're looking for evening relaxation and deep stress relief, this is your strain.

Why Buy Purple Arrow from Seennabis?

When you purchase Purple Arrow through Seennabis, you are buying directly from Mendocino Farms — NorCal farm breeder from the Emerald Triangle — Mendocino County. Every order includes verified genetics, discreet shipping, and responsive seller support.