Flowering Type

Photoperiod

Parental lines

Brazilian x South Indian

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Photoperiod flowering time

8 to 10 weeks

Yield indoor

High Yield (450-600gr/m2)

Plant size

Large

Suitable climates

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

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From the breeder

Plants white with crystals.

Seedsman breeder notes

Aroma

EarthySpicy

Parental lines

BrazilianSouth Indian

Description

Plants white with crystals.

White Widow is a classic marijuana strain. Aptly named for it's bright white trichomes, white widow is "frosty" or "crystally" in appearance. This potent strain is a beautiful representation of the indica-dominant hybrid originating from quality cannabis breeding in Amsterdam. White Widow originated by crossing a "Brazilian sativa land-race" with a "resin-heavy south Indian indica". This is the mastery of cannabis breeding and genetics in the direction of potency, not flavor. These two genetic traits, landrace sativa, and heavy-resin indica were chosen primarily for their abilities to get a user "high". For this reason, White Widow is without a doubt one of the most successful commercialized cannabis strains on the market. Buy White Widow seeds from Seedsman today and experience the very best in strain potency and cultivation efficiency.

Characteristics

Brand/breeder

Seedsman

Parental lines

Brazilian x South Indian

Type

Indica / Sativa hybrid

Color

Silver, White

Flowering type

Photoperiod

Sex

Feminised

THC potential

High THC (16-24%)

CBD potential

Low CBD (0-1%)

Yield potential outdoor

High Yield (450-750gr/plant)

Yield potential indoor

High Yield (450-600gr/m2)

Plant size

Large

Flowering time (photoperiod)

8 to 10 weeks

Northern hemisphere harvest

October, September

Southern hemisphere harvest

April, March

Suitable climate

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

Aroma

Earthy, Spicy

SKU

whitewidow

Grow guide

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

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

Reviews

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randall scales 19.07.2026

buyer

The plant is doing ok. However, the plants top broke off during a storm but is still growing flower buds. what is your assessment of the plants sustainablility? Also, through your experience, what fertilizer would you recommend and how ofter should i feed this plant? Thank you in advance for your help in these matter. RL Scales

Michael LaMontagne 10.07.2026

Flavour: Poor Found Strain: Already Known

buyer

Never poped

As described: NoExpected Yield: BelowRecommend to others: No

Kim Arts 17.06.2026

buyer

It's growing a little bit, but it looks like it's more dying than growing

James Burke 06.12.2025

Flavour: Excellent

buyer

Stacks up real nice, crystal city sugar and shade leaves. Just don't flip light cycle to early. AAA+++

As described: YesExpected Yield: AboveRecommend to others: Yes

Jeremiah Schaap 12.11.2025

Flavour: Excellent

buyer

Classic white widow. Great, classic terp profile, vigorous strain that responded great to scrogging. Dense, spears of buds, frost up to the fan leaves.

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 Feminized Seeds

Flowering Type

Photoperiod

Parental lines

Brazilian x South Indian

THC content

High THC (16-24%)

CBD content

Low CBD (0-1%)

Photoperiod flowering time

8 to 10 weeks

Yield indoor

High Yield (450-600gr/m2)

Plant size

Large

Suitable climates

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

Photoperiod outdoor timeline

Indoor photoperiod timeline

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