White Widow Autoflower
Cannabis seeds
by Royal Queen Seeds
White Widow Autoflower Cannabis Seeds by Royal Queen Seeds
White Widow Autoflower is a feminized autoflowering cannabis seed that delivers the legendary Dutch coffeeshop classic in a compact, fast-finishing package. Royal Queen Seeds crossed the original White Widow with Critical Auto and a ruderalis parent, producing a 40% Sativa, 40% Indica, 20% Ruderalis hybrid that goes from seed to harvest in 10-12 weeks flat. No light schedule fiddling, no clone drama — just plant, water, and wait.
How Many Seeds Do You Need?
This strain comes in packs of 1, 3, 5, or 10 seeds. If you're running your first autoflower grow, grab a 3-pack — it gives you enough plants to learn from without committing to a full tent. Already know your way around a grow room? The 10-pack is the best value per seed, and with autoflowers you can stagger your planting for a rolling harvest every few weeks.
Why White Widow Autoflower Seeds Deserve a Spot in Your Grow
The original White Widow has been a fixture in Amsterdam coffeeshops since the mid-1990s. We've watched it go from "the new thing" to a stone-cold classic over the past 25-odd years. The problem? The photoperiod version demands a proper 12/12 light flip, takes its sweet time, and stretches tall enough to cause headaches in smaller spaces. Royal Queen Seeds solved all of that by crossing White Widow with Critical Auto and stabilising the ruderalis genetics.
The result is a plant that stays between 50 and 110cm tall — short enough for a balcony grow or a small tent — and flowers automatically regardless of your light schedule. You get the same sweet-and-sour citrus aroma the White family is known for, just slightly dialled back in intensity compared to the photoperiod mother. The smoke delivers a physically numbing, deeply relaxing body effect that will genuinely nail you to the sofa. Not a "maybe I'll do the dishes later" kind of relaxed — more like "the remote is 30cm away and that's too far."
One honest note: autoflowers don't respond well to high-stress training techniques like topping or heavy defoliation. The ruderalis genetics mean the vegetative period is short and fixed — the plant can't recover the way a photoperiod strain can. Stick to low-stress training (LST) if you want to shape the canopy. Tie branches down gently, and you'll be rewarded with better light penetration and fatter buds without stressing the plant out.
Growing White Widow Autoflower Seeds: What to Expect
These seeds are feminized, so every plant produces flowers — no males to cull. The autoflowering genetics mean flowering kicks in around week 3-4 regardless of light cycle, and you're looking at a total seed-to-harvest window of 10 to 12 weeks. That's fast enough to squeeze in two full runs per outdoor season in most European climates.
Yield sits at 50-160 grams per plant depending on conditions. Indoor growers working a proper setup with good light and airflow will land closer to the top of that range. Outdoor plants in a warm, sunny spot can surprise you — the 160g ceiling is achievable with the right feeding schedule and enough direct sunlight.
This strain doesn't respond well to overfeeding. Start nutrient dosing at around 50% of what you'd give a photoperiod plant. A lightly organic substrate with a naturally balanced pH between 6.0 and 7.0 works best. If you're using liquid nutrients, keep nitrogen low once flowering begins — around 50mg/L is plenty. Overdo it and you'll get dark, clawed leaves and disappointing buds.
| Specification | Detail |
|---|---|
| Seed Bank | Royal Queen Seeds |
| Genetics | White Widow x Critical Auto x Ruderalis |
| Type | Feminized Autoflower |
| Sativa / Indica / Ruderalis | 40% / 40% / 20% |
| Seed to Harvest | 10-12 weeks |
| Plant Height | 50-110cm |
| Yield Per Plant | 50-160g |
| Aroma and Taste | Sweet and sour, citric |
| Effect | Physically numbing, deeply relaxing |
| Cannabinoid Content | Extremely high |
| Available Pack Sizes | 1, 3, 5, or 10 seeds |
Running an indoor grow? Pair these seeds with a complete grow tent kit — tent, light, ventilation and carbon filter in one box. If you're growing in soil, a fabric grow pot (geotextile) gives autoflower roots better aeration than plastic pots, which translates directly to healthier plants and better yields.
White Widow Auto Aroma, Taste, and Effect
Crack open a cured bud and you get that signature White Widow smell — sweet and sour with a citric edge, like lemon peel dipped in sugar. It's recognisable if you've ever walked through a Dutch coffeeshop, though the autoflower version is a touch milder on the nose than the photoperiod original. The taste follows through: citrus-forward with a slightly earthy finish on the exhale.
The effect is where this strain earns its reputation. The cannabinoid content is extremely high, and the balanced Sativa-Indica genetics deliver a two-phase experience. There's an initial gentle uplift — a warm, contented headspace — that quickly settles into a heavy, physically numbing body relaxation. This is evening smoke, full stop. Don't plan anything productive after. The pain-relieving properties and the sheer potency of the cannabinoid profile have made this strain popular among growers looking for something with medicinal potential.
If you've grown or smoked Royal Queen Seeds' Amnesia Haze Auto, the contrast is stark. Amnesia Haze leans heavily Sativa — cerebral, energetic, daytime material. White Widow Auto is the opposite end of the spectrum: slower, heavier, and far more physically sedating. Pick based on what you actually want from your evening.
How to Grow White Widow Autoflower Seeds
- Germinate seeds using the paper towel method or plant directly into a small pot of moist, lightly fertilised soil. Autoflowers don't like being transplanted, so starting in the final container (7-15L) saves stress.
- Keep the growing medium moist but not waterlogged during the seedling stage. Overwatering is the number one killer of young autoflowers.
- Provide 18-20 hours of light per day for the entire lifecycle. Unlike photoperiod strains, autoflowers don't need a light schedule change to trigger flowering.
- Begin low-stress training once the plant has 4-5 nodes. Gently bend the main stem sideways and secure it with soft plant ties. This opens up the canopy and encourages lower branches to develop.
- Switch to bloom nutrients when you see the first pistils appear, usually around week 3-4. Keep doses at 50% strength and increase gradually only if the plant looks hungry.
- Maintain pH between 6.0 and 7.0 in soil. In coco or hydro, aim for 5.8-6.2.
- Flush with plain water for the final 7-10 days before harvest. Trichomes should be mostly milky with some turning amber — that's your window for a relaxing, body-heavy effect.
- Harvest, dry slowly in a dark room at 18-22°C with 55-60% humidity for 7-10 days, then cure in glass jars for at least 2 weeks. Patience here pays off in smoother smoke and better flavour.
White Widow Autoflower Compared to Other Auto Strains
| Strain | Genetics | Height | Seed to Harvest | Yield Per Plant | Primary Effect |
|---|---|---|---|---|---|
| White Widow Auto (RQS) | 40% Sativa / 40% Indica / 20% Ruderalis | 50-110cm | 10-12 weeks | 50-160g | Physically relaxing, sedating |
| Amnesia Haze Auto (RQS) | Sativa-dominant auto | 50-100cm | 10-12 weeks | 40-150g | Cerebral, energetic |
| Northern Lights Auto | Indica-dominant auto | 40-100cm | 9-11 weeks | 50-130g | Heavy body, sleepy |
White Widow Auto sits right in the middle ground — not as racy as Amnesia Haze, not as knock-out sleepy as Northern Lights. If you want one autoflower strain that covers relaxed evenings without completely shutting you down, this is the best auto for balanced relaxation from the Royal Queen Seeds catalogue.
Frequently Asked Questions
What is White Widow Autoflower?
White Widow Autoflower is a feminized autoflowering cannabis seed from Royal Queen Seeds. It's a cross between the classic White Widow, Critical Auto, and ruderalis genetics, producing a 40/40/20 Sativa-Indica-Ruderalis hybrid that flowers automatically in 10-12 weeks from seed.
How tall does White Widow Auto grow?
Plants typically reach 50-110cm. The ruderalis genetics keep it compact, making it well-suited for small tents, balconies, or discreet outdoor spots. Low-stress training can help keep it even shorter while improving yield.
How much does White Widow Autoflower yield?
Expect 50-160 grams per plant. The wide range depends on growing conditions — light intensity, nutrients, and pot size all play a role. Indoor growers with a decent setup consistently hit the upper half of that range.
Do I need to change the light schedule for autoflowers?
No. Autoflowers flower based on age, not light cycle. Run 18-20 hours of light per day from seed to harvest. No 12/12 flip needed, which is one of the biggest advantages over photoperiod strains.
Can I top White Widow Autoflower plants?
We'd advise against it. Autoflowers have a fixed, short vegetative period and can't recover from high-stress techniques the way photoperiod plants do. Stick to low-stress training — bending and tying branches — for the best results without stunting growth.
What does White Widow Auto smell and taste like?
Sweet and sour with a distinct citric edge — classic White Widow character, slightly less intense than the photoperiod version. The taste follows through with citrus on the inhale and an earthy finish. Expect your grow space to smell noticeably from mid-flower onwards.
Is White Widow Autoflower good for first-time growers?
Yes. The autoflowering and feminized genetics remove the two biggest beginner hurdles: sexing plants and managing light schedules. Keep nutrients at half strength, don't overwater, and you'll do fine. It's one of the most forgiving autos in the Royal Queen Seeds lineup.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.