Flowering Type

Autoflowering

Parental lines

Afghani x Thai

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Autoflowering seed to harvest time

10 to 12 weeks

Yield indoor

Average Yield (350-450gr/m2)

Plant size

Medium

Suitable climates

Cool, Dry, High altitude, Hot, Temperate, Warm

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From the breeder

Potent and productive auto strain.

Seedsman breeder notes

Aroma

Earthy

Parental lines

AfghaniThai

Description

Potent and productive auto strain.

Intense shades of purple, blue and green define this small but lethal indica variety. With a tapestry of flavours ranging from pine and earth to sweet and sour plum jam, Northern Light Auto has a strong combination of both cerebral relaxation and couch lock. Like most auto-flowering varieties, this strain is easy to grow and prefers light, low release fertilisation and is mould, pest and disease resistant.

Characteristics

Brand/breeder

Seedsman

Parental lines

Afghani x Thai

Variety

Indica dominant

Colour

Black, Dark Green

Flowering type

Autoflowering

Sex

Feminised

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Yield outdoor

Average Yield (200-450gr/plant)

Yield indoor

Average Yield (350-450gr/m2)

Plant size

Medium

Autoflowering seed to harvest time

10 to 12 weeks

Suitable climates

Cool, Dry, High altitude, Hot, Temperate, Warm

Aroma

Earthy

SKU

SMAN-NL-AUTO-FEM

Grow guide

Autoflowering outdoor timeline

Autos can be sown in multiple waves through the season for staggered harvests.

Stage 1

Germination

April – July

Wait for: warmer days, no frost, stable temperatures

Watch for: cold nights, overwatering, weak early light

Stage 2

Seedling / Transplant

1–2 weeks after sprouting

Wait for: strong light, mild weather, protected start

Watch for: slug damage, stretching, transplant stress

Stage 3

Vegetative Growth

Weeks 2–5

Wait for: long bright days, healthy root growth

Watch for: stunting, nutrient burn, pest pressure

Stage 4

Flowering

Weeks 5–8+ depending on cultivar

Wait for: steady sunshine, decent airflow, dry spells

Watch for: mould, heavy rain, snapped branches

Stage 5

Harvest

Weeks 8+ or summer to early autumn

Wait for: mature trichomes, swollen buds, finished aroma

Watch for: bad weather, bud rot, harvesting too early

Indoor autoflowering timeline

Autoflowers follow their own internal clock, making indoor timelines easier to plan from seed to harvest.

Week 0

Germination

Healthy seedling emergence

Wait for: healthy seedling emergence

Watch for: overwatering, weak starts

Week 1–2

Seedling

Steady early growth

Wait for: steady early growth

Watch for: stretching, stress, excess moisture

Week 2–5

Early Growth

Strong leaf and root development

Wait for: strong leaf and root development

Watch for: stunting, overcrowding, early stress

Week 5–9+

Flowering

Bud development and visible maturity

Wait for: bud development and visible maturity

Watch for: humidity issues, poor airflow, plant stress

Week 8–12+

Harvest Window

Finished flowers and mature trichomes

Wait for: finished flowers and mature trichomes

Watch for: harvesting too early

Reviews

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Ray 01.06.2023

buyer

Plants grew great,nice high.

Seedsman (26.10.2026): Thanks for the 4-star rating, Ray! We're so pleased to hear that the Northern Lights Auto Feminised Seeds grew well for you and most importantly, that you enjoyed the high! Thanks again for the kind words.

Julia 28.05.2023

buyer

Autos are a great way to sustain perpetual grow rooms.

Seedsman (26.10.2026): Thank you so much, Julia, for your 4-star rating of Northern Lights Auto Feminised Seeds. We're glad to know that you've had a good experience with our product. Autos are a great way to sustain perpetual grow rooms, and we appreciate your word for it! Thank you again.

Johannes 27.05.2023

buyer

Only one is born and it Looks not good since a week.

Seedsman (26.10.2026): Thank you so much for your honest feedback, Johannes! We appreciate you taking the time to let us know about your experience with Northern Lights Auto Feminised Seeds. We apologize for the issue with only one of the seeds germinating and its poor performance. May we ask what happened - is there anything we can do to make it better? Please do reach out to us at [email protected] and we can look into what we can do to resolve this for you. Thank you again!

Anonymous 26.05.2023

buyer

The seeds never germinated.

Seedsman (26.10.2026): Thank you so much for your feedback on our Northern Lights Auto Feminised Seeds. We really appreciate you taking the time to let us know how your experience was. We apologise that the seeds never germinated and we understand how disappointing and frustrating this must have been for you. Please do reach out to us at [email protected] and we can look into what we can do to resolve this for you. Thank you for your patience and understanding.

Alex 26.05.2023

buyer

The seeds never sprouted and I was very unhappy that I couldn't get a refund of my money and customer service wasn't very helpful! I'm never doing business with seedman again.

Seedsman (26.10.2026): Thank you for your honest feedback, Alex. We truly appreciate you taking the time to let us know about your experience. We are so sorry to hear that the Northern Lights Auto Feminised Seeds never sprouted and that our customer service was not very helpful with getting you a refund. That is certainly not what we strive for and we would like to know more so that we may learn from this situation and make things right. Would you be willing to share with us how we can better serve you in the future?

Please note that some customers choose to leave a rating without writing a review, and because of this the number of ratings will differ from the number of reviews.

Northern Lights Auto Feminised Seeds

Flowering Type

Autoflowering

Parental lines

Afghani x Thai

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Autoflowering seed to harvest time

10 to 12 weeks

Yield indoor

Average Yield (350-450gr/m2)

Plant size

Medium

Suitable climates

Cool, Dry, High altitude, Hot, Temperate, Warm

Autoflowering outdoor timeline

Indoor autoflowering timeline

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