Seeds
AK-420 Feminised Seeds
SKU: WHITE-AK420-FEM
Sativa-dominant strain with good yields and an uplifting effect.
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Flowering Type
Photoperiod
Parental lines
Colombian x Mexican x Thai x Afghani landraces
THC content
Information not available
CBD content
Information not available
Autoflowering seed to harvest time
Information not available
Yield indoor
Information not available
Plant size
Information not available
Suitable climates
Humid, Warm
From the breeder
Sativa-dominant strain with good yields and an uplifting effect.
White Label Seed Company breeder notesParental lines
ColombianMeicanThai
Sativa-dominant strain with good yields and an uplifting effect.
AK-420 Feminised is a new version of the well-known strain AK-47. AK-420 is 65% sativa and was bred from Colombian, Mexican, Thai, and Afghani landrace strains. Growers from novice to experienced levels will be able to obtain a good harvest.
AK-420 can be grown indoors as well as outdoors in warm, sunny climates such as a Mediterranean one. Plants are short in the vegetative growth period but stretch in flower reaching between 80 - 140 cm. Indoors, flowering lasts for 50 - 65 days with yields of 450 - 500 gr/m2. Indoor growers will need effective carbon filters as the scent during flowering is very pungent.
Outdoors, plants grow a bit taller producing up to 550 gr/plant. Growth is bushy with good leaf development and it is advised to prune leaves to allow light to penetrate better and improve air circulation through the canopy. Buds are light green with orange hairs and an open structure typical of plants with a sativa dominance. Plants adapt well to the SCRoG technique.
Floral scents can have strong tropical notes. The dried and cured buds exude a rich range of scents that include sandalwood, spice, caramel, and coffee. The effect is uplifting and creative while also being quite relaxing.
Brand/breeder
Parental lines
Colombian x Mexican x Thai x Afghani landraces
Flowering type
Photoperiod
Sex
Feminised
Suitable climate
Humid, Warm
SKU
WHITE-AK420-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
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
Review author:
Review date:
20.10.2025
Purchase date:
Review text:
Only 2 out of 5 grew into plants Not as much yield as expected on plants but they did produce
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