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Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
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NEW
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
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Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEMNorthern Lights 99 (Brothers Grimm Collab) Feminised Seeds-SMAN-NL99-FEM
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
Northern Lights 99 collab strain Seedsman x Brothers Grimm
NEW
Seeds

Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds

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SKU: SMAN-NL99-FEM

Seedsman x Brothers Grimm - old-school power, modern performance.

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Flowering Type

Photoperiod

Parental lines

Northern Lights Haze x Cinderella 99

THC content

Very High THC (25%+)

CBD content
Information not available

Photoperiod flowering time

8 to 10 weeks

Yield indoor

High Yield (450-600gr/m2)

Plant size

Medium

Suitable climates

Dry, Warm

Got a question about this strain? Ask growers in the Seedsman Community.

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From the breeder

Seedsman x Brothers Grimm - old-school power, modern performance.

Seedsman breeder notes
Aroma
EarthyFruityGassySpicy
Effect description
EnergeticPotentPsychedelic
Parental lines
Northern Lights HazeCinderella 99

Seedsman x Brothers Grimm - old-school power, modern performance.

Northern Lights 99 is what happens when Seedsman’s global reach meets Brothers Grimm’s breeding pedigree. This collaboration puts one of Brothers Grimm’s most iconic creations - Cinderella 99 - alongside a standout Northern LightsHaze selection from F2 Nevil’s NL5 x Haze stock, giving Seedsman growers access to something with real weight behind it. Not just a good name, not just another modern release - this is classic cannabis history reworked into a faster, more practical format for today’s home grower.

If you love old-school Haze but do not want to wait forever, Northern Lights 99 hits a sweet spot. It keeps the soaring energy, psychoactive punch, and unmistakable terpene depth that made Haze legendary, then sharpens it with the resin production, flavour, and grower appeal of Cinderella 99. Flowering in around 9 weeks and finishing outdoors by mid October in suitable climates, it offers the kind of heirloom-driven character that many newer strains simply cannot match. This is the appeal of classic lineage at its best - more identity, more story, more substance, and a result that feels built to last rather than built for short-term hype.

In the grow room, Northern Lights 99 stays compact enough to perform well indoors while still delivering excellent yields, long colas, and flowers so heavily coated in resin they can look silver from a distance. The flavour is where it really starts to separate itself: tropical fruit and candy sweetness up front, followed by diesel fuel, old-school Haze funk, and a savoury edge that gives it real depth. With THC potential of 25%+, high resin production, and an uplifting, potent, cerebral effect, Northern Lights 99 is made for growers chasing standout flavour, strong bag appeal, and the kind of high-energy experience that keeps classic genetics relevant.

Brand/breeder
Parental lines
Northern Lights Haze x Cinderella 99
Variety
Sativa dominant
Flowering type
Photoperiod
Sex
Feminised
THC content
Very High THC (25%+)
Yield outdoor
Very High Yield (above 750gr/plant)
Yield indoor
High Yield (450-600gr/m2)
Plant size
Medium
Photoperiod flowering time
8 to 10 weeks
Northern hemisphere harvest
October
Southern hemisphere harvest
April
Suitable climates
Dry, Warm
Aroma
Earthy, Fruity, Gassy, Spicy, Sweet
SKU
SMAN-NL99-FEM

Photoperiod outdoor timeline

Photoperiod strains rely on seasonal daylight changes, so harvest timing is closely tied to your local climate.

Stage 1
Germination / Early Start
March – April
Wait for: frost risk easing, stronger spring light
Watch for: cold snaps, slow starts, excess moisture
Stage 2
Seedling / Transplant
April – May
Wait for: milder nights and settled weather
Watch for: transplant shock, wind exposure, pests
Stage 3
Vegetative Growth
June – July
Wait for: long days, regular feeding, healthy expansion
Watch for: overcrowding, nutrient issues, insect damage
Stage 4
Flowering
August – September
Wait for: shortening days, dry airflow, branch support
Watch for: mould, botrytis, high humidity, bad weather
Stage 5
Harvest
Late September – October
Wait for: ripe trichomes, dense finished flowers
Watch for: autumn rain, rot, early frosts
Photoperiod strains rely on seasonal daylight changes, so harvest timing is closely tied to your local climate.

Indoor photoperiod timeline

Photoperiod strains give indoor growers more control over size, shape, and when flowering begins.

Week 0
Germination
Strong early establishment
Wait for: strong early establishment
Watch for: inconsistent starts, excess moisture
Week 1–2
Seedling
Stable structure and healthy growth
Wait for: stable structure and healthy growth
Watch for: stretch, early stress
Week 3–6+
Vegetative Growth
Desired plant size and canopy shape
Wait for: desired plant size and canopy shape
Watch for: overcrowding, uneven growth, training stress
7–12+ weeks
Flowering Phase
Strong flower formation and steady development
Wait for: strong flower formation and steady development
Watch for: humidity, airflow, support issues
Harvest
Harvest Window
Finished flowers and mature trichomes
Wait for: finished flowers and mature trichomes
Watch for: cutting too early or pushing too long
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Frequently asked questions
Is this strain suitable for my growing environment?

In theory most strains can be grown outdoors, indoors or in a greenhouse but how well they perform depends on the more exact environmental conditions. This is most important outdoors where climatic conditions can vary widely, so please check the strain information carefully. If your climate is more extreme or growing season shorter you should choose strain that is specifically adapted. Indoor and greenhouse environments can be controlled and made suitable for most strains although space can be a factor for strain that grow very large.

How difficult is this strain to grow?

Growing difficulty varies depending on a strain's resilience, structure and environmental needs. Some strains are more forgiving and better suited to beginners and a range of environmental conditions, while others may require closer control of factors such as light, humidity, temperature and feeding.

What can I expect in terms of cannabinoid content and yield?

Our product information and that provided by suppliers can be an indication of potential levels under optimal conditions, and it should not be assumed that results can be replicated in all conditions.

Is this strain suitable for beginners?

Strains described as beginner-friendly, easy to grow or resilient, in particular Autoflowering Feminised strains, are generally more manageable for less experienced growers. These varieties are often a more reliable starting point than more specialised genetics.

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Seeds

Northern Lights 99 (Brothers Grimm Collab) Feminised Seeds

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