Black Widow Auto from Seeds66 brings the classic Black Widow background into a compact, easy-running autoflower. Built from an original Black Widow cutting (Brazilian sativa x South Indian indica) crossed with a robust ruderalis, this line leans clearly towards the indica side while keeping the recognisable character of the original. The result: a straightforward auto with reliable timing, solid yields and a bright, fruity profile.
Quick Info: Black Widow Auto
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Genetics: Black Widow x Ruderalis
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Type: feminized, autoflowering, indica-leaning Seeds66 line
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Indoor flowering: around 8 weeks
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Outdoor harvest: around 8–9 weeks
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Indoor yield: up to 500 g/m²
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Outdoor yield: 50–120 g per plant
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THC / CBD: up to 23 % / 2–3 %
Origin & Seeds66 Selection
The genetic core of this line comes from a classic Black Widow whose heritage is Brazilian sativa x South Indian indica. By crossing it with a stable ruderalis, the emphasis shifts towards indica dominance while the original Black Widow character remains recognisable. The goal was a true autoflower that carries the same spirit but runs independently of light cycle changes.
In our documented test runs in California we focused on phenotypes that finished reliably, stayed manageable in height and developed a clearly fruity-citrus profile. Only plants that repeated this behaviour over several cycles were chosen for the final Seeds66 version of Black Widow Auto.
Growth & Cultivation
Black Widow Auto is easy-going and therefore well suited even for less experienced growers. Indoors she generally reaches up to about 80–120 cm and needs around eight weeks from seed to harvest. Under decent light and with the right pot size, yields of 350–500 g/m² are realistic; in well-tuned hydro systems, this can climb even higher.
Outdoors she grows to roughly 140 cm and, depending on conditions, produces about 50–120 g per plant. A sunny, airy spot with well-draining soil helps her show her full potential. As with most autos, it is a good idea to sow directly into the final pot to avoid transplant stress.
Seeds66 Tip: Start Black Widow Auto straight in 9–11 litre pots and keep the first weeks evenly moist rather than soaking wet. A stable 18/6 light schedule and early removal of weak lower shoots help her focus energy into the main buds.
Aroma & Terpenes
Black Widow Auto comes with a fruity-citrus bouquet that is hard to overlook. Sweet fruit notes mix with lime and lemon, rounded off by a soft, warm background. Many growers describe the aroma as a fruity-lemon profile with a clear hint of orange.
In the pipe or vaporiser, the taste stays mild and pleasant. The citrus-fruity line carries through from the first draw to the aftertaste and lingers on the palate without feeling artificial or overdone.
Effects
With THC levels of up to 23 %, Black Widow Auto delivers a balanced mix of mental and physical effects. The onset is usually a gentle lift that puts some distance between you and the noise of the day, followed by a noticeable body relaxation that takes pressure out of muscles and posture.
Because of this balanced approach, she can work both in quieter daytime moments and in the evening. Many people reach for Black Widow Auto to unwind after work, listen to music or slow down the tempo without immediately disappearing into the couch.
Seeds66 Philosophy
For Seeds66, Black Widow Auto represents what we want from an autoflowering line: manageable height, clear timing and a recognisable profile that doesn’t depend on perfect circumstances to shine. We keep only those autos in our range that behave consistently across different setups and remain predictable for growers.
The idea behind this is simple: a Seeds66 autoflower stays in the catalogue only if it delivers reproducible results under real-world conditions.
Properties of Black Widow Auto
Type indica-dominant hybrid line
Seed form feminized, autoflowering Seeds66 line
Genetics Black Widow – Ruderalis
Effect balanced, relaxing, mood-brightening
Flavour fruity / lime / sweet / lemon / light orange notes
Indoor flowering around 8 weeks (from seed to harvest)
Outdoor harvest around 8–9 weeks flowering time
Indoor yield up to 500 g/m²
Outdoor yield 50–120 g per plant
Height indoors up to 120 cm
Height outdoors around 140 cm
THC / CBD up to 23 % / 2–3 %
Seeds66 Editorial Team
All descriptions are based on our tests and documentation carried out in California. We publish only strains we have documented ourselves, focusing on germination strength, stability and reproducible results for growers.
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