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Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
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Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
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Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
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Green Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEMGreen Crack Auto Feminised Seeds-SMAN-GRCRK-AUTO-FEM
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Green Crack Auto Feminised Seeds
Seeds

Green Crack Auto Feminised Seeds

Average rating:  3.5   (votes: 141) Reviews (132)
SKU: SMAN-GRCRK-AUTO-FEM

A fast, high-yielding sativa-dominant auto strain.

Two legendary names. One exclusive strain.
Introducing Northern Lights 99

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Testimonial 
Author:  ashmike.evans Rating: 5.0 out of 5 stars
Date:  19.06.2024
Text:  Really happy with how Green Crack Auto grew. Definitely a strain I will grow again but with more control on size, indoor. Buds were well built, dense, and sticky. Took me 14 weeks from seed to harvest indoors with minimal training and not heavily fed.

Flowering Type

Autoflowering

Parental lines

Skunk #1 x Afghani

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

Dry, Humid, Temperate, Warm

From the breeder

A fast, high-yielding sativa-dominant auto strain.

Seedsman breeder notes
Aroma
FruitySpicy
Parental lines
Skunk #1Afghani

A fast, high-yielding sativa-dominant auto strain.

Green Crack Auto is a sativa-dominant hybrid auto-flowering strain which is the result of adding in ruderalis genetics to the excellent Green Crack strain. Green Crack Auto is a great plant for the beginner to grow whilst also appealing to the discerning connoisseur consumer.

Growing Green Crack Auto is fast, having a cycle from seedling to harvest of a mere 8 - 9 weeks. In next to no time growers will be able to harvest high yields both indoors as well as outdoors. These plants grow to a height of between 60 - 90 cm. so even the larger plants won't need too much space and they make an excellent choice for indoor SoG techniques. Outdoors they remain quite discreet and tying them down once established will keep an even lower profile. Buds develop thick and fast and the high number of side-branches add to this strain's potential harvest quantities. Be generous with the nutrients in flowering as these are hungry girls and growers will reap the reward at harvest time.

Dense, light green buds are flecked with bright orange pistils and are heavy with resin; this is an excellent choice from which to make extracts. Its taste is dominated by mango with added floral and fruity notes. THC levels are up around 20% and this, along with low CBD, gives an uplifting and euphoric effect with creative energy - great through the day and for social situations as well.

Brand/breeder
Parental lines
Skunk #1 x Afghani
Type
Sativa dominant
Colour
Orange
Flowering type
Autoflowering
Sex
Feminised
THC potential
High THC (16-24%)
CBD potential
Low CBD (0-1%)
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
Dry, Humid, Temperate, Warm
Aroma
Fruity, Spicy
SKU
SMAN-GRCRK-AUTO-FEM

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

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
3.5
Rating 3.5 out of 5 stars
Based on 141 ratings and 132 reviews
As described
No
Partly
Yes
Yes, 4.444444444444445 out of 5, No – Yes
Based on 18 votes
Expected Yield
Below
Expected
Above
Expected, 4 out of 5, Below – Above
Based on 16 votes
Recommend to others
No
Neutral
Yes
Yes, 4.529411764705882 out of 5, No – Yes
Based on 17 votes
Filter
We found matching review(s) Clear filters
Review author:  Raven Wilson    Review date:  13.09.2025
Review rating: 5.0 out of 5 stars
Flavour: Excellent
Verified
 buyer
Purchase date: 
Review text: 
Fast growing and great yield. Wonderful buzz .
As described: YesExpected Yield: AboveRecommend to others: Yes
Review author:  Anonymous    Review date:  01.07.2025
Review rating: 2.0 out of 5 stars
Flavour: Excellent Found Strain: Word of Mouth
Verified
 buyer
Purchase date: 
Review text: 
So I have bought the green crack auto's before with great success. For some reason this time 1 out of the 3 turned out to be a hermaphrodite and believe it affected my other 2. Very disappointing.. I use a high-quality organic soil and have had much successful before with the seats. Not sure why these ones were not the same quality.
As described: PartlyExpected Yield: BelowRecommend to others: Yes
Review author:  Charles Simmons    Review date:  30.04.2025
Review rating: 1.0 out of 5 stars
Verified
 buyer
Purchase date: 
Review text: 
Looked good first three weeks but began flowering at three inches Online
Review author:  Anonymous    Review date:  05.03.2025
Review rating: 4.0 out of 5 stars
Verified
 buyer
Purchase date: 
Review text: 
Started growing a couple months ago so I'm still learning about everything. I accidentally stunted this plant early in the veg phase by reaching behind it. I broke it right in half and sent it straight to flower. Nonetheless this plant smells wonderful while it's growing. Thick buds medium density, veeery sticky! I only got 3.4 grams from this little thing but it smoked very well. Dried and cured for the proper amount of time. It gave me no trouble and adjusted as much as it could after I gave it a heck of a struggle. Definitely growing this again but I only have 1 more seed so I'll wait until my intermediate growers phase to give it a go one last time! Looking for Autoflowers for beginners
Review author:  Jeromy Anderson    Review date:  09.02.2025
Review rating: 5.0 out of 5 stars
Flavour: Excellent Found Strain: Online Browsing
Verified
 buyer
Purchase date: 
Review text: 
Easy to grow, very hearty buds and a wonderful aroma. Recommend more than a 5gal pot for these.
As described: YesExpected Yield: Above
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.
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Green Crack Auto Feminised Seeds

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