Flowering Type

Autoflowering

Parental lines

Brazilian x South Indian

THC content

High THC (16-24%)

CBD content

Information not available

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

An auto version of a famous Seedsman White Widow

Seedsman breeder notes

Aroma

Spicy

Parental lines

BrazilianSouth Indian

Description

An auto version of a famous Seedsman White Widow

White Widow has long been a favourite at Seedsman and this strain has helped make Seedsman famous in the cannabis world. Seedsman Auto version carries on from their White Widow's amazing genetics, producing a very vigorous auto strain, covered in trichomes with a potent effect.

Characteristics

Brand/breeder

Seedsman

Parental lines

Brazilian x South Indian

Type

Indica / Sativa hybrid

Color

Dark Green

Flowering type

Autoflowering

Sex

Feminised

THC potential

High THC (16-24%)

Yield potential outdoor

Average Yield (200-450gr/plant)

Yield potential indoor

Average Yield (350-450gr/m2)

Plant size

Medium

Seed to harvest time (autoflowering)

10 to 12 weeks

Suitable climate

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

Aroma

Spicy

SKU

auto-white-widow

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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We found matching review(s) Clear filters

Michelle Weekly 19.06.2026

Found Strain: Word of Mouth

buyer

They are growing very slowly and one is very different looking. If I didn't know they were feminized I would think it was a male.

As described: PartlyExpected Yield: BelowRecommend to others: No

Seedsman (30.10.2026): Thanks so much for your review. If you like sharing photos please come and visit our new online community www.community.seedsman.com. Its a place for learning, teaching, and sharing ideas and photos as well as taking part in one of our many give aways. Best Tom

Laurence Wentler 22.03.2026

Flavour: Poor Found Strain: Online Browsing

buyer

None of the seeds popped

As described: NoExpected Yield: BelowRecommend to others: No

Anonymous 15.03.2026

buyer

Good taste On line

Anonymous 15.03.2026

Flavour: Excellent Found Strain: Online Browsing

buyer

Good taste

As described: PartlyExpected Yield: BelowRecommend to others: Yes

Kevin Krueckeberg 15.11.2025

Flavour: Excellent Found Strain: Strain Research

buyer

I ended up with chunky, heavy, resin coated buds that hit smooth and kickes you right in the ass!

As described: YesExpected Yield: AboveRecommend to others: Yes

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.

White Widow Auto Feminized Seeds

Flowering Type

Autoflowering

Parental lines

Brazilian x South Indian

THC content

High THC (16-24%)

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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