Black Widow Feminized Seeds by Positronics – High THC, Fast Flowering Indica for Reliable Yields

Black Widow feminized seeds by Positronics give you a legendary indica-dominant powerhouse that delivers heavy yields, potent THC levels, and a fast flowering cycle — all in a compact, easy-to-manage plant.

Worried your next grow won’t deliver the potency or reliability you’re after? You’ve probably been burned before — excited at first, only to end up with weak buds, slow flowering, or mold-prone plants that waste your time and nutrients.

That frustration is real. You invest in seeds, set up your space, and wait… only to harvest airy nugs with barely any kick. Or worse — your plants get hit by mildew in late flowering, and it’s game over. That “here we go again” feeling? We’ve all been there.

But Black Widow feminized flips the script. Bred from elite White Widow x Misty genetics, this strain is built for consistency. It flowers fast, resists pests well, and packs a punch with 18–21% THC. Whether you're growing indoors or outdoors, this is the no-nonsense indica that actually delivers on its promises.

Why Black Widow Is Worth It for Serious Growers

Black Widow isn’t just another name on a seed pack — it’s a proven legend. This nearly pure indica was one of the first strains to win international acclaim, and Positronics has refined it for modern growers. It’s forgiving for beginners but rewarding for experts, striking the perfect balance between ease of care and top-tier results. If you want a fast, high-THC strain that doesn’t demand perfection, this is your go-to.

Most Important Features and Benefits

• Flowers in just 50–60 days — get from seed to harvest faster than most indicas.
• Produces medium to high yields — up to 500 g/m² indoors (17.64 oz/ft²) with dense, resinous buds.
• Reaches a manageable height of 0.80–1.10 m (2.62–3.61 ft) indoors — perfect for stealth grows.
• Thrives in both soil and coco — adapts easily to your preferred medium.
• Emits a bold minty-forest aroma — but use a carbon filter, because this one smells strong.
• Delivers long-lasting, relaxing effects — ideal for evening use and unwinding after a long day.
• Resists most pests well — giving you peace of mind during critical growth stages.

Typical Objections and Clear Answers

Still on the fence? Let’s clear up the common doubts:

• You think that fast-flowering means weak effects. In reality, Black Widow packs 18–21% THC and hits hard with deep body relaxation.
• You worry it’s too sensitive to mold. In reality, it has moderate resistance — just avoid humidity spikes in late flowering.
• You assume high yield means tall plants. In reality, it stays compact while still producing up to 500 g/m² indoors.
• You fear complex feeding schedules. In reality, it responds best to quality organic nutrients — keep it simple and let the genetics shine.

How to Grow Black Widow Successfully

Maximize your results with a smart, step-by-step approach tailored to this strain’s strengths.

1. Start with a quality germination method — use a moist paper towel or starter cube at 22–25 °C.
2. Transplant carefully once roots are 1–2 cm long — avoid root shock with a light, airy medium like Monkey Coco Lite.
3. Use 18/6 light cycles in veg and switch to 12/12 to trigger flowering — this strain responds fast.
4. Keep humidity at 50–60% in veg and drop to 40–50% in flowering to prevent mold.
5. Support heavy colas with soft ties or trellis — this plant gets dense and top-heavy.
6. Flush with plain water 7–10 days before harvest to improve flavor and smoothness.
7. Cure buds in glass jars for 2–4 weeks at 18–22 °C and 58–62% RH for maximum potency.

Technical specifications

• Breeder / Brand: Positronics Seeds
• Type: Feminized
• Dominance: Indica (90%)
• Genetics: White Widow × Misty
• Flowering time: 50–60 days
• Outdoor harvest: Late September (Northern Hemisphere)
• Indoor yield: 450–500 g/m² (15.87–17.64 oz/ft²)
• Outdoor yield: 500–600 g/plant (17.64–21.16 oz/plant)
• Indoor height: 0.80–1.10 m (2.62–3.61 ft)
• Outdoor height: 1.50–2.00 m (4.92–6.56 ft)
• Difficulty: Medium
• Structure: Compact, short internodes, thick stems, high branching
• Climate: Temperate, Mediterranean — avoid excessive humidity
• Resistance: Moderate resistance to pests, moderate sensitivity to fungi
• Training: Responds well to LST and SCROG — avoid aggressive topping
• Substrate: Soil or coco — ensure good drainage and aeration
• Light: 18/6 (veg), 12/12 (flowering)
• Temperature: 22–26 °C (veg), 20–25 °C (flowering)
• Humidity: 60–70% (seedling), 50–60% (veg), 40–50% (flowering)
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• THC: 18–21%
• CBD: ~0.5%
• Aroma: Floral, fresh mint, forest peat
• Flavour: Earthy, sour, menthol aftertaste
• Effect: Strong body relaxation, calming, ideal for nighttime use

Frequently Asked Questions

Is Black Widow good for indoor growing?

Absolutely. It stays compact, flowers fast, and produces dense, resinous buds under 600W HPS or LED. Just control humidity and use a carbon filter.

Can I grow Black Widow outdoors in a humid climate?

Yes, but with caution. It has moderate mold resistance, so place it in full sun and ensure excellent airflow to reduce moisture buildup.

Does Black Widow need a lot of nutrients?

No. It prefers quality organic feeding over heavy chemical doses. Overfeeding can harm flavor and yield — less is more with this strain.

What’s the best time to harvest Black Widow?

Harvest when most trichomes are milky with some amber. For a more relaxing effect, wait until 20–30% are amber. Flush 7–10 days prior.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown Black Widow three times now — once outdoors in Málaga, twice indoors under LED. The first time, I overfed it in flowering and the taste suffered. Lesson learned: this strain rewards restraint. The second grow, I used organic nutrients and a HESI StarterBox Soil base — the buds were rock-hard and smelled like a forest after rain. It’s not the easiest strain, but it’s one of the most satisfying when done right. If you want power, speed, and legacy genetics, Black Widow won’t let you down.