The specs in one line: 19-24% THC, <1% CBD, 9-10 weeks from seed flowering, 400-500 g/m² reported. Best indoor or outdoor. easy grow.

Lineage: White Widow's reputation was built in Dutch coffeeshops decades before autoflowering genetics existed — Fast Buds has since rebuilt it for seed-to-harvest growers who don't want to manage light schedules. The autoflower version finishes in 9–10 weeks from seed and pulls 400–500 g/m² under decent light, which is a solid return for a strain that asks very little in return. Resin production is the standout trait here: the same heavy trichome coat that made the original famous carries through, backed by a THC range of 19–24%. Expect earthy, pine-forward smoke — nothing tropical, nothing candy — just a clean, old-school profile that a lot of growers actually prefer.

Shorter days and cooler shoulder seasons in Canada aren't a concern outdoors since the 9–10 week window fits comfortably between last frost and early September in most provinces. A good first autoflower for newer growers who want a forgiving plant with a proven track record.

Genetics & Lineage

White Widow Auto traces its genetics to s"]},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","name":"FastBuds Return Policy","url". 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 Fast Buds, 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 24%, this offers a well-balanced experience suitable for most users with some cannabis familiarity.

THC Level & Potency

White Widow Auto delivers THC levels of 19-24%, 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 5-10 minutes, settling into the body as a warm, heavy relaxation.

Growing White Widow Auto

White Widow 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 from seed with yields of 400-500 g/m². Plants typically reach 70-110 cm 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 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 dense flower formations.

Flavor, Aroma & Terpene Profile

White Widow Auto features a earthy, pine 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, White Widow 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 White Widow 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 White Widow Auto from Seennabis?

When you purchase White Widow Auto through Seennabis, you are buying directly from Fast Buds — The world's leading autoflower seed bank. Every order includes verified genetics, discreet shipping, and responsive seller support. Fast Buds has completed over 0 sales.

White Widow Auto vs Fast Buds (2Fast4Buds)

White Widow Auto is a high-performance autoflower strain from Fast Buds, also known as 2Fast4Buds or 42 Fast Buds — the world's leading autoflower breeder. Specializing exclusively in autoflowering genetics since 2010, Fast Buds has built a reputation for delivering strains that go from seed to harvest in just 8-10 weeks with impressive potency and reliability. This strain features the earthy and pine terpene profile that Fast Buds Seeds are celebrated for.

While 2fast4buds.com offers their full autoflower catalog direct, Seennabis gives you the complete picture. If you've been searching for “Fast Buds White Widow Auto” or “White Widow Auto 2Fast4Buds review,” you've found the most comprehensive breakdown available — with growing guides, effect profiles, and side-by-side comparisons against both other Fast Buds strains and photoperiod alternatives from different breeders.

Why Buy Fast Buds Seeds on Seennabis?

Fast Buds excels at autoflowers — and Seennabis puts them in context with the entire cannabis seed market:

• Auto vs photo comparison: See how White Widow Auto compares to photoperiod versions of the same genetics from breeders like Barney's Farm, Dutch Passion, and Sensi Seeds.
• Cross-breeder autoflower matchups: Compare Fast Buds autos against autoflowers from other breeders to find the best speed, yield, and potency balance.
• Deeper grow intelligence: Autoflower-specific cultivation guides with week-by-week timelines, LST techniques, and nutrient schedules tailored to Fast Buds genetics.
• Beyond autoflowers: Access 1,400+ strains including feminized and CBD seeds from 15+ breeders — all in one marketplace.