Black Widow

Black Widow Feminized Seeds — Compact Indica Power from Positronics Seeds

Black Widow feminized seeds are an Indica-dominant photoperiod strain from Positronics Seeds that crosses Misty with White Widow to produce a short, resinous plant with 19% THC and a sedative body effect. She stays around 1 metre indoors, finishes flowering in 55–66 days, and yields up to 400g/m² — built for growers working with limited vertical space who still want proper returns. The smoke carries a floral flavour with a cool menthol finish that lingers on the exhale. Sold in packs of 3 feminized seeds.

Genetics and Lineage

The genetics behind this strain pair two heavy hitters: Misty and White Widow. White Widow has been a coffeeshop staple since the mid-'90s — resinous, reliable, and universally recognised. Misty brings additional Indica weight and a tighter growth structure, pulling the plant's height down while keeping bud density up. The result is a compact hybrid that leans Indica in both structure and effect.

Positronics Seeds bred this cross specifically for indoor growers who need a manageable plant. At roughly 1 metre tall indoors (1.5–2 metres outdoors), she doesn't stretch into your lights or demand a tall tent. The Indica dominance shows in the tight internodal spacing and broad fan leaves — she grows like a squat bush rather than a lanky sativa. That compact canopy is covered in trichomes by harvest, which is exactly what you'd expect from anything carrying White Widow DNA. According to the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Indica-dominant cultivars with this trichome density typically reflect higher resin gland concentration per square centimetre of flower surface.

THC sits at 19% with 0.3% CBD. That's a solid potency level — strong enough to deliver a proper sedative, body-focused effect without being so overwhelming that newer growers can't handle the end product. The CBD content is minimal, so don't expect significant cannabinoid balance here. This is a THC-forward strain through and through.

Growing Indoors

These feminized seeds flower in 55–66 days under a 12/12 light cycle, which puts them on the faster end of photoperiod strains. Indoor yields reach up to 400g/m² — respectable for a plant this short. The compact structure means you can fit more plants per square metre in a Sea of Green setup, or let a few plants fill out in 7–11 litre pots under a 400W–600W light.

The one thing to watch: she's dense. Those tight buds and compact canopy can trap humidity if your airflow isn't sorted. In a small tent — especially a 60x60 or 80x80 — you'll want an oscillating fan moving air through the canopy and a decent extraction setup pulling moisture out. Bud rot doesn't care how good your genetics are if relative humidity sits above 55% during late flower. Keep it at 45–50% in the final two weeks and you'll be fine.

Feeding is straightforward. Indica-dominant plants generally don't need aggressive nutrient schedules. Start at half-strength and work up based on how the leaves respond. This strain isn't known for being fussy, but overfeeding a compact plant is easier than overfeeding a stretchy sativa — there's less foliage to absorb excess nitrogen.

Flavour Profile: Floral and Menthol

This strain produces buds with a distinctive floral aroma layered over a cool menthol undertone. On the inhale, it's sweet and slightly perfumed — think dried lavender rather than tropical fruit. The menthol comes through on the exhale, leaving a clean, almost eucalyptus-like coolness at the back of the throat. It's a flavour profile that sits closer to old-school Dutch genetics than the dessert strains dominating the market right now.

The resin production is heavy. White Widow genetics guarantee a thick trichome coating, and this cross doesn't disappoint — the buds look frosted by week 6 of flower. If you're into making dry sift or bubble hash, this strain is a strong candidate. The terpene profile leans towards myrcene and pinene based on the flavour characteristics, which tracks with the sedative effect and that menthol finish.

Black Widow vs. White Widow: Key Differences

Black Widow is a more compact, Indica-leaning descendant of White Widow with a heavier body effect and shorter stature. If you've grown White Widow before, this cross will feel familiar but more contained. White Widow tends to stretch more, especially sativa-leaning phenotypes, and can push past 1.5 metres indoors. This Positronics cross stays tighter — around 1 metre — thanks to the Misty influence. Flowering time is similar (White Widow typically runs 56–63 days), but the yield per square metre is competitive at 400g/m².

The effect is where they diverge most. White Widow carries a more balanced cerebral-to-body ratio. This cross leans harder into the Indica side — more sedative, more body-focused, less of that uplifting head sensation. If you want something to smoke in the evening that pins you to the sofa, the Positronics version is the better pick. If you want something more versatile for daytime use, stick with a classic White Widow or look at a sativa-dominant hybrid.

How to Grow: Step-by-Step Guide

Germination to harvest takes roughly 11–13 weeks total, including a 3–4 week vegetative phase and 55–66 days of flowering. Follow these steps for the best results with this Indica-dominant cultivar.

1. Germinate your seeds using the paper towel method — place seeds between damp paper towels on a plate, cover with a second plate, and keep in a warm spot (20–25°C). Taproots should appear within 24–72 hours.
2. Transfer sprouted seeds into small pots (0.5–1 litre) filled with a light seedling mix. Keep humidity high (65–70%) and light gentle — a CFL or low-power LED at 40–50cm distance works well for the first week.
3. Vegetate for 3–4 weeks under 18/6 light. This strain stays compact, so you don't need a long veg period to fill your canopy. Transplant into final pots (7–11 litres) once roots fill the starter container.
4. Flip to 12/12 to trigger flowering. You'll see pistils within 7–10 days. Start reducing humidity gradually — aim for 50–55% in early flower, dropping to 45% by week 5.
5. Feed a bloom-specific nutrient schedule from week 2 of flower. Start at half-strength and increase based on plant response. Watch for tip burn — it's your earliest sign of overfeeding.
6. Defoliate lightly around week 3 of flower to improve airflow through the dense canopy. Remove large fan leaves shading lower bud sites, but don't strip the plant bare — she needs those leaves for photosynthesis.
7. Begin flushing with plain pH'd water 10–14 days before harvest. Trichomes should be mostly milky with 10–20% amber when viewed under a jeweller's loupe. Harvest at 55–66 days of 12/12, depending on phenotype.
8. Dry in a dark room at 18–20°C and 55–60% humidity for 7–10 days, then cure in glass jars for a minimum of 2 weeks. The floral and menthol flavours develop significantly during a proper cure.

Why Buy Black Widow Feminized Seeds at Azarius

Azarius stocks genuine Positronics Seeds packaging with batch-traceable feminized genetics. When you order from our catalogue, every pack ships sealed from the breeder. We also carry a full range of growing accessories — from propagation kits with heated mats to carbon filters and clip-on oscillating fans — so you can get everything you need for a complete grow setup in one order. If you're comparing Indica-dominant strains, browse our feminized cannabis seeds category or check our seed bank overview on the Azarius Encyclopedia for detailed strain comparisons. Our cannabis cultivation guide on the Azarius blog covers environment setup, nutrient scheduling, and harvest timing for growers at every level.

Frequently Asked Questions

Last updated: April 2026