How to grow Northern Lights 10 of 10
- Breeder: Herbies
- Genetics: Mostly Indica
- THC: up to 33%
- Type: Photoperiod, feminized seeds
- Difficulty: easy
- Flowering: about 7 to 8 weeks
- Flavors: earthy, citrus, pine
Northern Lights 10 of 10 is a pure-Indica strain (30-35% THC) with earthy, citrusy aroma and hints of juniper, delivering profound relaxation, calm, and happy contentment.
What is specific about Northern Lights 10 of 10
- Fast finisher (~8 wks flower), plan your flush early so you don't overrun.
- Growers rate this beginner-friendly, forgiving of small mistakes.
- Rewards strong light and steady feeding with heavy yields.
- Very high THC, nutrient-hungry in flower; ramp feeding gradually and watch for tip burn.
Indoor calendar for Northern Lights 10 of 10
| Stage | When | Note |
|---|---|---|
| Germination | week 1 | Warm, humid and dark until the sprout shows. |
| Seedling | weeks 2 to 3 | Gentle light on 18/6. |
| Vegetative | weeks 4 to 7 (you decide) | Three to six weeks on 18/6; longer growth means a bigger plant. |
| Flowering | 7 to 8 weeks after the switch to 12/12 | Expect the plant to stretch in the first two to three weeks. |
| Harvest | around week 14 to 17 | Depends on how long you let it grow first. |
| Dry and cure | three to four weeks more | One to two weeks drying, then at least two weeks curing in jars. |
About 17 to 21 weeks from seed to cured buds, with 7 to 8 weeks of flowering.
Week by week
Germination: Days 1–7
Pop the seed.
- Soak in a moist paper towel or plant 1cm deep in light, airy soil.
- Keep warm (22–25°C), humid and dark until the sprout appears.
- Moist, never soggy.
Seedling: Weeks 2–3
First true leaves.
- Gentle light on 18/6, high humidity (~65%).
- Tiny waterings near the stem; let the top dry between.
- Quarter-strength nutrients at most.
Vegetative: Weeks 4–7 (you control length)
Build the plant.
- Photoperiod: keep 18/6 as long as you want size, then flip to 12/12 to begin flowering.
- Feed grow (high-N) nutrients; train (LST/topping) for an even canopy.
- Indica-leaning: bushier/compact, keep airflow between colas.
Flowering: ~7–8 weeks of bloom
Buds bulk up.
- Now on 12/12. Expect a 2–3 week stretch early, give headroom.
- Switch to bloom (high-P/K) nutrients; lower humidity (~45%) to prevent bud rot.
- Watch trichomes: mostly cloudy with some amber = peak ripeness.
Flush & harvest: Final 1–2 weeks
Finish clean.
- Plain water (no nutrients) the last 1–2 weeks for a smoother smoke.
- Harvest, wet-trim, dry slowly (~60°F / 60% RH, 7–14 days).
- Cure in jars 2+ weeks, burping daily at first.
~14–16 weeks (plus veg time).
Growing Northern Lights 10 of 10 outdoors
Outdoors in central Europe photoperiod plants start flowering in early to mid August, so Northern Lights 10 of 10, with 7 to 8 weeks of flowering, is usually ready in mid September to early October. That is before the worst of the autumn weather in most years, which makes it a reasonable outdoor choice.
Drying and curing
Its citrus and pine notes come from the most volatile terpenes, the first to go in a warm, fast dry. Dry slowly around 18 °C and 60% humidity for 10 to 14 days and cure in jars to keep them.
How Northern Lights 10 of 10 compares
At 7 to 8 weeks it finishes faster than 95% of the 98 photoperiod strains in our guides (typical: 8.5 weeks).
Its THC, up to 33%, is above the typical 20% for these photoperiod strains.
Bred by Herbies, one of 50 Herbies strains with a grow guide here.
| Similar strain | Flowering | THC | Breeder |
|---|---|---|---|
| Think Fast | 7 to 8 weeks | 20% | Dutch Passion |
| Frisian Dew | 7 to 9 weeks | 15% | Dutch Passion |
| Frisian Duck | 7 to 9 weeks | 10% | Dutch Passion |
| Passion #1 | 7 to 9 weeks | 20% | Dutch Passion |
Effects
relaxing, euphoric
Grower verdict: 9 reviews, average 4.56/5.
Questions
Is Northern Lights 10 of 10 easy to grow?
Northern Lights 10 of 10 is considered easy to grow. This read draws on 9 grower reviews.
When is Northern Lights 10 of 10 ready outdoors?
Outdoors in central Europe photoperiod plants start flowering in early to mid August, so Northern Lights 10 of 10, with 7 to 8 weeks of flowering, is usually ready in mid September to early October. That is before the worst of the autumn weather in most years, which makes it a reasonable outdoor choice.
How strong is Northern Lights 10 of 10?
The breeder lists up to 33% THC. Real results depend on light, feeding and harvest timing.
When should I switch Northern Lights 10 of 10 to 12/12?
When the plant is about half the final height you want: it can double in size during the first weeks of flowering. Flowering then takes about 7 to 8 weeks.
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