How to Grow White Widow
Complete White Widow cultivation guide — from seeds and germination to harvest, drying and curing.
White Widow Grow Timeline
White Widow growing under optimised conditions
White Widow Seeds & Genetics
Genetics: Brazilian Sativa × South Indian Indica | Breeder: Green House Seeds | Type: Hybrid (Balanced)
White Widow was developed by Green House Seeds in the Netherlands during the early 1990s by crossing a Brazilian Sativa with a South Indian Indica landrace. The result is a balanced hybrid famous for its dense white trichome coating and energetic-yet-relaxing effects. When buying White Widow seeds, feminised versions from reputable breeders simplify the grow. The strain's genetics are stable and widely available. Start your seeds using the paper towel method or directly in a pH-neutral seedling mix. Germination typically takes 3–7 days. For a complete overview of starting your grow, visit our beginner cannabis growing guide.
Indoor vs Outdoor Growing White Widow
White Widow performs exceptionally well indoors under HPS or LED lighting. Its compact structure makes it ideal for small grow tents. Implement low-stress training early in the vegetative stage to spread the canopy and boost yields. Our cannabis training techniques guide explains LST, topping and manifolding in detail. Outdoors, White Widow suits temperate European or North American climates. Its natural mould resistance is a significant advantage in regions with autumn humidity. Plant after last frost in full sun. For outdoor setup tips, see our outdoor growing guide.
Nutrients & Feeding Schedule for White Widow
White Widow is considered a moderate feeder — easier to manage than heavy-feeding strains like OG Kush or Big Bud. Use a standard three-part nutrient system: grow, bloom and micro formulas. In vegetative growth, maintain EC 1.0–1.6. During flowering, raise EC to 1.4–2.0 with increased phosphorus and potassium. Always check and adjust pH — 6.0–7.0 in soil, 5.5–6.5 in hydro or coco. Our cannabis nutrients guide has strain-by-strain feeding charts.
Common Problems & Solutions When Growing White Widow
White Widow is remarkably problem-free compared to more sensitive strains. Main concerns are overfeeding (causes nutrient burn on leaf tips) and root rot in overly wet media. Ensure adequate drainage in pots. In humid climates, botrytis (bud rot) can occur in the last weeks — maintain airflow and keep humidity below 50% during flowering. Check our pH guide if you notice yellowing leaves mid-cycle, as lockout is the most common cause.
Harvest, Drying & Curing White Widow
White Widow is typically harvested when trichomes are 80% cloudy with 10–20% amber, producing a balanced effect profile. The buds are dense and heavily frosted — use sharp, clean trimming scissors to avoid losing resin. Dry trimmed or untrimmed buds at 18–21°C with 50–60% relative humidity for 10–14 days. Cure in sealed glass jars for at least 4 weeks, burping daily in the first two weeks. This enhances White Widow's spicy, earthy flavour. Full details in our harvest and curing guide.
Discover the full terpene profile, effects, and medical uses of White Widow.
White Widow Terpenes & Effects
Further Reading & Resources
Frequently Asked Questions — Growing White Widow
Is White Widow good for beginners?
Yes — White Widow is one of the most beginner-friendly strains available. It is resilient to temperature swings, resistant to mould, and forgiving of minor feeding errors.
How long does White Widow take to flower?
White Widow flowers in 8–9 weeks indoors. Outdoor plants are ready for harvest in early to mid-October.
What yield does White Widow produce?
Indoor growers can expect 450–500g/m² under quality lighting. Outdoor plants regularly yield 500–600g per plant in warm climates.
Can White Widow grow outdoors?
Absolutely. White Widow thrives outdoors in temperate and Mediterranean climates. Its mould resistance makes it suitable for regions with unpredictable late-season weather.
What nutrients does White Widow prefer?
White Widow is not a heavy feeder. Use standard cannabis nutrient schedules at slightly lower doses. It responds well to organic soil grows.
How do I maximise White Widow resin production?
Environmental stress techniques like low-stress training, temperature drops of 5–10°C in the final weeks, and UV-B exposure can boost trichome density on White Widow.
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- Training Techniques
- SCROG Guide
- Outdoor Growing Guide
- pH & Water Guide
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