How to Grow White Widow x Northern Lights
White Widow x Northern Lights is a balanced, high-yielding feminized strain that crosses two of cannabis’s most famous names. It is a lightly sativa-leaning 55/45 plant with a medium 18-20% THC, an earthy, fruity and sweet flavor, and a euphoric, happy, relaxed effect. Resinous, easy and manageable in size, it is a classic cross that suits growers at any level.
As a feminized strain, White Widow x Northern Lights is grown from seeds that produce only female, flowering plants, so there is no need to sex the garden or pull males. That keeps a crop simple to plan, and with its heavy harvest and legendary parents it is a satisfying strain to grow. You can see the full genetics and buy White Widow x Northern Lights seeds on the strain page, and browse the rest of our feminized seeds alongside it.
Recommended Strains
White Widow x Northern Lights
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THC | 18% - 20% (Medium) |
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Type | Feminized |
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Yield | High |
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Phenotype | 45% Indica / 55% Sativa |
Auto White Widow CBD
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CBD | 10% – 12% (Medium) |
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Type | CBD Autoflowering |
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Yield | Low |
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Phenotype | 40% Indica / 60% Sativa |
Frosty, productive and beginner-friendly, this is a rewarding plant to grow indoors or out. At a moderate 1.5 m it stays easy to handle in a tent, while still delivering the big, resin-coated colas you would expect from a White Widow and Northern Lights pairing.
Strain Profile at a Glance
| THC | Medium (18-20%) |
|---|---|
| Lineage | White Widow x Northern Lights |
| Type | Feminized |
| Genetics | 55% Sativa / 45% Indica |
| Climate | Temperate |
| Flowering time | 8-10 weeks |
| Harvest (outdoor) | October |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.47-1.64 oz/ft² (450-500 g/m²) |
| Yield outdoor | 12.35-15.87 oz/plant (350-450 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Earthy, Fruity, Sweet |
| Effects | Euphoric, Happy, Relaxed |
Promos & Deals
Growing a Feminized Strain
Because White Widow x Northern Lights is feminized, every seed is bred to grow into a flowering female, so there are no males to spot and remove and no risk of them pollinating your buds. You grow it on a photoperiod schedule: keep it under long days, around 18 hours of light, for as long as you want it to grow in the vegetative stage, then switch the lights to 12 hours on and 12 hours off to trigger flowering. That 12/12 flip is the signal that tells the plant to stop stretching and start making buds.
How long you veg decides the final size. This cross stays moderate at around 1.5 m, so it is easy to keep in proportion indoors with a normal veg, while a longer veg outdoors lets it fill out for bigger yields. Give it a few weeks of healthy vegetative growth, train it lightly if you want an even canopy, then flip to 12/12 and let it flower for 8 to 10 weeks.
Climate and Where to Grow It
White Widow x Northern Lights suits a temperate climate and does well both indoors and outdoors. Outdoors it is a classic October finisher in the northern hemisphere, using the summer to build its frame before the shorter autumn days bring on flowering. Give it a sunny, sheltered spot, and because it stays a manageable 1.5 m it fits comfortably in a tent or a modest garden.
Yields are high in both settings: around 450-500 g/m² indoors under good lights and 350-450 g per plant outdoors when it has space, sun and a large container or open soil. As an easy, vigorous sativa-leaning hybrid it is forgiving of small mistakes, so a little simple training and good support through flower are all it really asks for.
Keep humidity sensible through flowering to protect those dense, resinous buds: around 55-60% in early bloom, nearer 40% as the flowers swell, and lower toward harvest. Tight, resinous colas can trap moisture inside, so steady airflow through the canopy keeps the finish clean. Aim for temperatures around 68-80°F (20-27°C) for healthy, vigorous growth.
Feeding Schedule (EC Guide)
White Widow x Northern Lights is a vigorous, productive plant that takes a solid feed, but it still pays to build up slowly and read the leaves. Start light, raise the feed through the vegetative stage, push more phosphorus and potassium through flower to fuel the colas, then flush at the end so the sweet, fruity and earthy notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed while roots establish |
| Vegetative | 0.8-1.2 | Raise nitrogen as the plant builds its frame |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) through the stretch |
| Full flower | 1.4-1.6 | Peak bloom feed while the colas swell |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once you flip to 12/12, White Widow x Northern Lights flowers for about 8 to 10 weeks, with the biggest stretch in the first couple of weeks. It then fills out with dense, resin-coated, trichome-frosted buds, developing a sweet, fruity aroma over a grounded, earthy base from its Northern Lights side. Outdoors it is typically ready through October.
Yields are high: around 450-500 g/m² indoors and 350-450 g per plant outdoors when it has room to size up. Keep the colas supported and the canopy open so the lower buds get light, feed it well through flower, and harvest when most of the trichomes have turned cloudy with a few amber for the fullest sweet-earthy flavor and the most rounded effect.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry matters with dense, resinous buds, because they can stay damp in the middle while the outside dries, and a gentle dry protects the sweet, fruity-earthy aroma.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings out the earthy, fruity and sweet notes and smooths the smoke, turning a freshly dried harvest into a rich, flavorful result worthy of its White Widow and Northern Lights lineage.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. This cross is a very resinous, frosty plant thanks to its White Widow side, so its trim is excellent for dry sift, bubble hash or rosin. That heavy resin and sweet, earthy aroma make the trim genuinely valuable, turning offcuts into a potent, flavorful concentrate run rather than waste.
Flavor and Terpenes
White Widow x Northern Lights leads with a sweet, fruity flavor carried on a grounded, earthy base, a classic and well-rounded profile that draws on both White Widow and Northern Lights. It is a smooth, full-bodied smoke, and a good cure really brings that sweet-earthy character forward in the jar and on the inhale.
Its terpene profile shapes that flavor. Myrcene drives a sweet, fruity, earthy base, while caryophyllene adds a warm, peppery spice and humulene brings a deep, woody, earthy quality. A touch of alpha-pinene lifts the profile with a fresh, piney edge, and a little linalool adds a soft, floral note, with a hint of isopulegol giving a cool, minty lift. Together these terpenes frame the earthy, fruity and sweet character the strain is known for.
Effects and Best Use
With its medium 18-20% THC and balanced, lightly sativa-leaning 55/45 make-up, White Widow x Northern Lights delivers a bright, well-rounded experience. It is reported as euphoric, happy and relaxed, pairing an upbeat, cheerful lift with a comfortable, settled body, which makes it a versatile strain for daytime or social use. Its gentle potency keeps it easy to enjoy and easy to dose.
That euphoric, happy, relaxed profile makes it a satisfying all-rounder, good for staying cheerful and sociable while enjoying its sweet, fruity-earthy flavor. The combination of an easy, resinous, high-yielding grow, a bright balanced effect and a classic, full flavor is exactly why this White Widow and Northern Lights cross stands out.
Common Problems and Pro Tips
White Widow x Northern Lights is forgiving, which makes it a great choice for newer growers, but a little attention early pays off. Top it once in veg and use light low-stress training to spread the branches and keep an even canopy, so light reaches every bud site. It stays a manageable 1.5 m, so headroom is rarely an issue, but an open, well-trained plant will always yield more and finish more evenly.
Through flower, the main job is protecting those dense, resinous colas. Keep steady airflow around the buds, hold humidity sensible so moisture does not sit inside the tight flowers, and defoliate a few of the largest fan leaves so light and air reach the lower canopy. Support the heavier branches before harvest so they do not fold under the weight of the colas.
As a pro tip, make the most of its resin and flavor: feed it well through flower, save the frosty trim for concentrates, and protect the terpenes with a proper plain-water flush and a full three to four week cure. Harvest when most trichomes are cloudy with a few amber for a bright, balanced result with the sweet-earthy flavor this classic cross is prized for.
FAQ
Is White Widow x Northern Lights a feminized strain?
Yes. White Widow x Northern Lights is sold as feminized seeds, which means every seed is bred to grow into a flowering female plant. You do not have to identify and remove males, and there is no risk of them pollinating your buds. You grow it on a photoperiod schedule, keeping it under long days to veg and then switching to 12/12 to start flowering.
How tall does White Widow x Northern Lights get?
It stays moderate, reaching around 1.5 m, which makes it easy to keep in proportion in a tent or a modest garden. A single top in veg and light low-stress training are enough to hold an even canopy. Because headroom is rarely an issue, you can focus on good light and support rather than aggressive height control.
How much does White Widow x Northern Lights yield?
It is a heavy yielder. Indoors it can produce around 450-500 g/m² under good lights, and outdoors a single plant with space, sun and a large pot can reach 350-450 g. Give it a long enough veg, plenty of light, an open canopy and support for the colas to get the most from it.
How long does White Widow x Northern Lights take to flower?
Once you switch the lights to 12/12, it flowers for about 8 to 10 weeks before it is ready to harvest. Grown outdoors in a temperate climate, it typically finishes through October. The first couple of weeks of flower are when it stretches most, so set your canopy and support early in bloom.
What does White Widow x Northern Lights taste like?
It has a sweet, fruity flavor over a grounded, earthy base. Myrcene drives the sweet, fruity, earthy base, caryophyllene adds a peppery spice, humulene a woody depth, alpha-pinene a fresh lift, and a little linalool a soft floral note. A proper three to four week cure really brings that sweet-earthy character forward on the inhale.
Is White Widow x Northern Lights good for beginners?
Yes. It is an easy, vigorous and forgiving strain, and because it is feminized there are no males to deal with. It stays a manageable size, flowers in a reliable 8 to 10 weeks and gives a heavy harvest with simple care, so it is a very rewarding plant for a first or early grow as well as for experienced growers.
