How to Grow Northern Lights #10 x Amnesia Haze
Northern Lights #10 x Amnesia Haze is a tall, citrus-forward sativa hybrid that blends classic Dutch genetics into one aromatic, high-THC plant. It pairs a strong 23–25% THC with a citrus, earthy, spicy flavour and a happy, relaxed, deeply soothing effect, on a big, vigorous plant that rewards patient growers.
Built from Northern Lights #10 crossed with Amnesia Haze, this is a 60% sativa, 40% indica strain that leans to the haze side in both its growth and its uplifting, feel-good character. The result is a fragrant, resinous plant with long colas and a lively citrus-spice nose.
Recommended Strains
Northern Lights #10 x Amnesia Haze
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THC | 23% - 25% (High) |
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Type | Feminized |
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Yield | Medium |
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Phenotype | 40% Indica / 60% Sativa |
Super Boof Auto
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THC | 25% - 28% (High) |
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Type | Autoflowering |
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Yield | Low |
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Phenotype | 60% Indica / 40% Sativa |
Because it is vigorous and flavourful, Northern Lights #10 x Amnesia Haze is a rewarding grow, especially if you have the headroom for a tall sativa. You can see the full genetics and buy Northern Lights #10 x Amnesia Haze feminized seeds on the strain page, and browse more of our feminized range alongside it.
Strain Profile at a Glance
| THC | 23–25% (high) |
|---|---|
| Lineage | Northern Lights #10 x Amnesia Haze |
| Type | Feminized |
| Genetics | 60% Sativa / 40% Indica |
| Climate | Dry |
| Flowering time | 9–11 weeks |
| Harvest | November |
| Height | 6.56 ft / 2 m |
| Yield | Medium |
| Yield indoor | 0.98–1.31 oz/ft² (300–400 g/m²) |
| Yield outdoor | 17.64 oz/plant (500 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Citrus, Earthy, Spicy |
| Effects | Happy, Relaxed, Soothing |
Promos & Deals
Climate and Where to Grow It
Northern Lights #10 x Amnesia Haze prefers a dry climate with warm days, low humidity and plenty of sun, which suits its long haze-leaning flowering period. It is a vigorous, adaptable sativa that performs both outdoors in a long, warm season and in a controlled indoor tent.
Outdoors it finishes later than most, around November, and a single plant can bring in a solid 500 g in a good spot. Indoors it produces a moderate 300–400 g/m². Keep the air dry and moving as the long colas fill in, since airy sativa flowers still benefit from protection against late-season damp.
Indoors, aim for daytime temperatures around 70–82°F (21–28°C) and keep steady airflow through the canopy. A dry room in the final weeks helps the resinous buds finish clean and protects the bright citrus-spice aroma.
Managing the Height
At around 2 m this is a tall plant, and the sativa side means it stretches hard once flowering begins, often doubling in height. Plan your space around that: give it a large pot, start flowering earlier indoors to control the final size, and make sure you have the vertical room before you begin.
Low-stress training (LST) and topping early in the vegetative stage help spread the canopy, tame the stretch and turn one dominant cola into several even ones. A SCROG net is a great option indoors, holding the tall branches at an even height and making the most of your light. Outdoors, give it a sturdy stake or trellis so the long colas do not fold under their own weight.
Growing Feminized Photoperiod Seeds
As a feminized strain, every seed grows into a flowering female, so there is no need to sex the plants or remove males. That keeps the grow simple and means no wasted time or space on plants you would only cull later.
Being a photoperiod plant, Northern Lights #10 x Amnesia Haze flowers on a light change rather than on age. Grow it under a long day (around 18 hours of light) through the vegetative stage, then switch to a 12/12 cycle to trigger flowering. Keep the veg short if height is a concern, since this sativa will stretch a lot once the lights flip.
Feeding Schedule (EC Guide)
This is a vigorous plant with a long bloom, so feed it steadily through flowering to carry it all the way to a late finish. Start low, build up as the plant asks for more, and taper off for the final flush so the bright citrus-spice flavour stays clean.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4–0.6 | Very light feed, focus on healthy root growth |
| Vegetative growth | 0.8–1.2 | Build the frame, raise nitrogen gradually |
| Early flower | 1.2–1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4–1.6 | Peak bloom feed through the long flowering period |
| Flush | 0.0–0.4 | Plain water for the final 1–2 weeks |
Flowering and Harvest
Once you flip to 12/12, bloom runs a long 9–11 weeks, as you would expect from a haze-leaning sativa. The plant forms long, airy colas rather than the tight, chunky buds of a pure indica, so give them room and light to fill in fully.
Keep the canopy open and well supported through the stretch and the long bloom. Harvest when most trichomes have turned cloudy with a few amber heads for the fullest expression, and run a short plain-water flush in the last week or two. Outdoor plants are usually ready around November.
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 protects the bright, zesty aroma and keeps the airy colas from drying too fast.
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 brings the citrus and spice forward over the earthy base and smooths the smoke, which is exactly what this haze-leaning cross deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Northern Lights #10 x Amnesia Haze is a frosty, high-THC plant, so the trim is excellent for dry sift, bubble hash or rosin, giving you a bonus run of potent concentrate from material most growers throw away.
Flavor and Terpenes
Northern Lights #10 x Amnesia Haze has a lively flavour of bright citrus and warm spice over an earthy base, the zesty, aromatic character that Amnesia Haze is loved for. It is a sharp, complex profile rather than a sweet or creamy one.
It carries a broad terpene stack. Six shape the aroma: terpinolene drives the fresh, zesty citrus lift; geraniol adds a floral, citrusy brightness; caryophyllene brings the peppery spice; myrcene anchors the earthy, musky base; humulene deepens the woody, earthy side; and pinene adds a crisp, resinous edge. A supporting cast of borneol and linalool fills in the herbal corners.
Effects and Best Use
With its 60% sativa base, Northern Lights #10 x Amnesia Haze is reported as happy, relaxed and deeply soothing, a bright, feel-good character that lifts the mood while staying gentle on the body. The 2% CBD alongside the high THC adds to that smooth, well-rounded feel.
At a strong 23–25% THC it is potent, so a little goes a long way, especially for less experienced users. That strength, the lively citrus-spice flavour and the classic haze character make it a genuinely rewarding grow for anyone with the space for a tall sativa.
Common Problems and Pro Tips
Northern Lights #10 x Amnesia Haze is a rewarding grow, but it is a tall, potent 60% sativa with a long bloom, so height control comes first.
- Control the height: it reaches around 2 m and stretches hard in early flower, so top it, use LST or a SCROG net and give it plenty of vertical space.
- Plan for a long bloom: its haze side flowers for 9 to 11 weeks and finishes in November outdoors, so feed it through the whole window and be patient.
- Keep it on the dry side: it prefers a drier climate and its long bloom gives mold more time, so hold humidity down and keep a fan moving air through the canopy.
Expert tip: at 23 to 25% THC this is a strong one, so harvest on your trichomes. The bright citrus and warm spice over its earthy base holds up best with a slow dry and a careful cure in jars.
Frequently Asked Questions
Is Northern Lights #10 x Amnesia Haze indica or sativa?
It is sativa-dominant, at 60% sativa and 40% indica, which shows in its tall, stretchy growth and its bright, uplifting effect. That sativa structure means a real haze stretch after the flip, so top it and train it hard to keep the height and the canopy manageable, especially indoors.
How tall does it get?
Around 2 m, and it stretches hard in early flower. Use topping, LST or a SCROG net and plenty of vertical space to keep it manageable. Flipping to 12/12 a little sooner also helps control that stretch, especially in a tent where vertical room is limited for a haze like this one.
How long does it take to flower?
A long 9 to 11 weeks once you switch to a 12/12 light cycle, typical of a haze-leaning sativa, with outdoor plants finishing around November. Feed it through that whole window, keep air moving, and start checking trichomes toward the end to catch the plant at your preferred ripeness.
Do I need to sex the plants?
No. These are feminized seeds, so every plant grows into a flowering female. There is no need to identify or remove males, which keeps the grow simple and makes better use of your space, especially with a tall plant where every spot in the tent counts toward the final harvest.
What does Northern Lights #10 x Amnesia Haze taste like?
Expect bright citrus and warm spice over an earthy base, driven by its terpinolene, geraniol, caryophyllene and myrcene terpenes. Dry slowly in a cool, dark space and cure in jars so that zesty, spicy haze character comes through at its best in the finished flower after harvest.
How much does it yield?
It is a medium producer: 0.98 to 1.31 oz/ft² (300 to 400 g/m²) indoors, and around 17.64 oz (500 g) per plant outdoors in a good season. Training the tall haze stretch into an even canopy and feeding it through the long bloom help the plant reach the top of that range at harvest.
