- Strain Type: 70% indica / 30% sativa
- Genetics: White Widow × Fast Buds Auto #1
- Breeder: Fast Buds
- THC Content: Up to approximately 20%
- CBD Content: Less than 1%
- Terpene Profile: Linalool, caryophyllene, pinene
- Primary Flavors: Earth, musk, spice, sweetness, herbs
- Flowering Time (Indoor): 9 weeks from seed to harvest
- Outdoor Harvest Time: 9–11 weeks from germination
- Indoor Yield: Approximately 400–500 g/m²
- Outdoor Yield: Approximately 50–170 g per plant
- Grow Difficulty: Easy
White Widow Auto brings one of the most recognizable names in old-school cannabis into a format that behaves very differently in the garden. Fast Buds crossed White Widow with its Auto #1 line, then worked the result into an F4 feminized autoflower capable of completing its life cycle in roughly nine weeks under favorable indoor conditions.
What remains familiar is the resin: mature flowers develop the silvered, heavily frosted appearance that made White Widow famous, while the aroma stays rooted in earth, musk, spice, herbs, and restrained sweetness rather than modern candy-shop terpenes. The effect follows a similarly classic progression, beginning bright and mentally alert before becoming more physically relaxed with continued consumption. For growers, it offers traditional marijuana character without photoperiod flowering management.
Genetics and Lineage
Fast Buds identifies the direct parentage as White Widow × Fast Buds Auto #1. Its published genetic tree traces the White Widow side to South Indian Indica and Brazilian ancestry, while the automatic branch includes Lowryder #1, Northern Lights, Willy’s Wonder, ruderalis, Fast Bud Auto, and NYC Diesel. The finished seed line is classified as an F4 autoflower, reflecting multiple generations of selection rather than a single ruderalis cross.
The resulting plant is listed at 70% indica and 30% sativa, yet its effects can feel more mentally animated than that ratio suggests. Fast Buds emphasizes that the auto preserves White Widow’s resin-heavy personality while improving speed and automatic flowering consistency. The specifications here refer specifically to the Fast Buds version.
Effects and Experience
The first stage is clear-headed and lively. Fast Buds describes an uplifting, alert effect that can feel mentally organized rather than hazy, making lighter amounts compatible with conversation, household tasks, creative hobbies, or other low-pressure activities. That brighter onset reflects the sativa-like side of the experience even though the plant is genetically indica dominant. It is not generally portrayed as a frantic high; instead, the cerebral buzz tends to feel controlled before the body becomes more noticeable.
Continued consumption changes the balance. Muscular ease and physical calm increase while the initial mental sharpness softens, producing the two-stage White Widow character Fast Buds highlights in its strain material. With THC reaching about 20%, the cultivar can still overwhelm consumers with low tolerance if they increase the dose too quickly. Cannabis can impair reaction time, coordination, judgment, and perception, so an alert-feeling onset should never be interpreted as safe driving ability.
Medical Benefits
Some medical marijuana consumers may find this progression appealing because it does not begin with immediate heaviness. A THC-dominant cultivar that first lifts mood and later relaxes the body may be considered by experienced patients dealing with discomfort, appetite changes, stress, or difficulty settling down. White Widow Auto itself, however, has not been established in clinical trials as a treatment for pain, anxiety, insomnia, depression, or another medical disorder.
Broader clinical evidence suggests that cannabis-based medicines can provide small improvements in chronic pain for some patients while also increasing certain adverse effects. This cultivar contains less than 1% CBD according to Fast Buds, so its psychoactive effects are driven primarily by THC rather than a balanced cannabinoid ratio. NIDA notes that THC can alter mood, thought, and perception and may produce anxiety or fear in some people. Patients using prescription medication or weed for persistent symptoms should discuss cannabis use with an appropriate healthcare professional.
Flavor Profile and Aroma
White Widow Auto favors an earthy, spice-driven profile over the confectionary character of many newer hybrids. Fast Buds lists earthy, musky, spicy, and sweet flavors on the product page, while its detailed cultivation guide adds sour citrus, herbs, flowers, and pine. A properly cured flower can open with dry soil and musk, followed by peppery spice and resinous herbs. Citrus and floral accents sit higher in the aroma, while mild sweetness rounds off the sharper notes rather than dominating them.
Fast Buds’ White Widow terpene reference lists linalool, caryophyllene, and pinene as the major terpenes, with limonene, terpinolene, and humulene appearing at lower concentrations. Linalool reinforces floral and lightly spicy qualities, caryophyllene fits the peppery-earthy side, and pinene supports the fresh herbal and pine character. Those figures are representative rather than guaranteed for every harvest.
Growing Information
Cultivation is one of the strongest arguments for this version. Fast Buds lists a mature height of approximately 70–110 cm, indoor yields of 400–500 g/m², and outdoor production of 50–170 g per plant. The breeder advertises a nine-week indoor cycle, while its grow guide gives a practical 9–11 week range and notes that outdoor plants may take longer. Because flowering is automatic, there is no fixed September or October harvest date and no need to switch an indoor garden to a 12/12 schedule.
The plant develops even internodal spacing, a prominent central cola, and long side branches carrying large resinous flowers. Late bloom may bring pink or magenta coloration alongside dark green flower and maroon-brown pistils. Fast Buds describes trichomes covering the buds and nearby leaf material, making the cultivar attractive for resin-focused processing.
Hardiness adds to its beginner appeal. The breeder describes the plant as tolerant of warm and relatively cool conditions and recommends low-stress training. Autos still have less time than photoperiod plants to recover from major early mistakes, so gentle training, stable root-zone moisture, adequate drainage, and gradual feeding are preferable to severe pruning or repeated transplantation. During flowering, lower humidity and good airflow help create a more stable finishing environment around resinous flowers.
FAQ
Is White Widow Auto indica or sativa?
Fast Buds classifies its version as 70% indica and 30% sativa. The plant’s structure leans indica, but the effect begins with a noticeably uplifting, clear-minded phase before becoming more physically relaxed.
What are the genetics of White Widow Auto?
The official Fast Buds cross is White Widow × Fast Buds Auto #1. The breeder’s genetic tree traces the White Widow parent through South Indian Indica and Brazilian ancestry and the automatic side through established Lowryder-related and Fast Buds autoflower genetics.
How strong is White Widow Auto?
Fast Buds currently lists THC at up to 20% and CBD below 1%. Actual flower can test differently depending on phenotype, lighting, plant health, harvest timing, drying, and curing.
How long does White Widow Auto take from seed to harvest?
The breeder lists about nine weeks under favorable conditions, while its detailed grow guide gives a practical range of roughly 9–11 weeks depending on environment and phenotype. Outdoor plants may take around 69–77 days.
How much does White Widow Auto yield?
Fast Buds lists approximately 400–500 g/m² indoors and 50–170 g per plant outdoors. Final production depends on light intensity, root development, climate, nutrition, training, and overall plant health.
Final Thoughts on White Widow Auto
White Widow Auto preserves the qualities that made classic White Widow memorable while changing the cultivation timetable completely. Fast Buds combines White Widow with Auto #1 and stabilizes the result as an F4 automatic line, producing a compact 70% indica plant that can reach about 20% THC and finish in roughly nine weeks under optimized conditions. Its dense trichome coverage, earthy-musky spice, pine, herbs, citrus, and restrained sweetness give the finished weed a profile markedly different from modern fruit-candy cultivars.
For growers, the attraction is practical: manageable height, substantial resin, 400–500 g/m² indoor yields, climate tolerance, and automatic flowering. Consumers receive an equally characteristic effect curve, moving from alert cerebral uplift toward deeper relaxation. Because White Widow Auto exists in multiple breeder versions, attaching Fast Buds to these genetics and specifications is important. Within that line, the cultivar stands as a convincing autoflower interpretation of one of cannabis breeding’s enduring classics.
