White Widow XXL Auto by Barney's Farm

White Widow XXL Auto by Barney’s Farm brings the famous Amsterdam classic into a fast, compact autoflowering format. It combines a Brazilian Sativa and a super-resinous South Indian Indica with BF Super Auto #1, creating a 70% Indica plant rated at 23% THC that goes from seed to harvest in just 70–75 days.

Like the photoperiod version, this auto is tough and versatile. Barney’s Farm notes good resistance to mold and pests and the ability to cope with colder climates, so it is a reliable pick for first-time growers as well as experienced hands looking for a quick, frosty crop.

Indoors, plants reach 80–100 cm (31–39 in) and yield 450–550 g/m² (1.47–1.80 oz/ft²). Outdoors, they grow to 100–120 cm (39–47 in) and produce 180–250 g/plant (6.3–8.8 oz/plant), all without any change in light schedule.

Lineage: White Widow Meets BF Super Auto #1

The backbone is the classic White Widow pairing of Brazilian Sativa and South Indian Indica, here in the XXL form with an extra-resinous Indica selection. Barney’s Farm fused it with BF Super Auto #1, its in-house autoflowering line, to add day-neutral flowering and speed.

The result is more compact than the feminized White Widow XXL but still vigorous and fast. Plants take on a classic Indica shape, growing bushy and wide just in time for bloom, while the flowering colas can stretch into long, Sativa-like spears.

Aroma, Flavor and Effect

The scent is classic Widow: pungent and skunky with sweet citrus on top and spicy pine underneath. Earthy, woody tones show up when the dried buds are broken open.

The flavor brings skunk, sweetness, warm spice and fresh pine, with an earthy, woody finish. It is old-school Amsterdam in a quick, modern package.

The effect is lively despite the Indica-heavy genetics. Expect a creative, energetic and euphoric high with a talkative streak, well suited to social sessions. At 23% THC it is strong, so take it slow at first.

Growing White Widow XXL Auto Indoors and Outdoors

As an autoflower, this strain does not need a 12/12 switch to bloom. Indoors, run 18/6 or 20/4 light from seed to harvest and it will start flowering on its own after a few weeks of growth. Start seeds in their final container to avoid transplant setbacks, and use gentle LST (bending and tying branches) rather than topping.

The full cycle takes 70–75 days from seed. In a tent, plants stay at 80–100 cm (31–39 in), which makes a sea of green with several plants per square meter an efficient setup. A well-run grow can reach 450–550 g/m² (1.47–1.80 oz/ft²).

Outdoors, plants grow to 100–120 cm (39–47 in) and give 180–250 g/plant (6.3–8.8 oz/plant). Because the cycle is short and the plant handles cool weather and moisture well, it can be sown from late spring through early summer, and even allows two harvests in a long, warm season across much of the US.

White Widow XXL Auto Characteristics

Strain type	Autoflowering feminized
Genetics	Brazilian x South Indian x BF Super Auto #1
Indica/Sativa	70% Indica / 30% Sativa
THC	23%
Effect	Creative, energetic, talkative, euphoric
Flavor	Skunky, sweet, spicy, pine
Aroma	Sweet, pungent, spicy, pine
Indoor yield	450–550 g/m² (1.47–1.80 oz/ft²)
Outdoor yield	180–250 g/plant (6.3–8.8 oz/plant)
Seed to harvest	70–75 days
Height	Indoor: 80–100 cm (31–39 in); Outdoor: 100–120 cm (39–47 in)
Best cultivation technique	SOG and gentle LST under 18/6 or 20/4 light

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