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Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
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Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
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Fatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEMFatso GMO F1 Auto Feminised Seeds-SMAN-FAGMO-AUTO-FEM
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Fatso GMO F1 Auto Feminised Seeds
Seeds

Fatso GMO F1 Auto Feminised Seeds

Average rating:  3.9   (votes: 18) Reviews (17)
SKU: SMAN-FAGMO-AUTO-FEM

F1 hybrid autoflowering strain. Good yields and high THC production.

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Testimonial 
Author:  Anonymous Rating: 5.0 out of 5 stars
Date:  17.12.2024
Text:  Most resin and largest Autoflowers so far!!! Topped above the 3rd node, responds extremely well to training. Has thick branches and buds like a photo. The smell and taste are just great. I grow in 1 gallon pots in small 2.8x2.8x63" tents and top above node 3 to get 4 cola grows, Fatso is perfect for this. The amount of resin looks like the buds are covered in snow.

Flowering Type

Autoflowering

Parental lines

(GMO Cookies x Legend OG) x (Lavender x Power Plant)

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, Hot, Humid, Temperate, Warm

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From the breeder

F1 hybrid autoflowering strain. Good yields and high THC production.

Seedsman breeder notes
Aroma
FloralPineySkunky
Parental lines
(GMO CookiesLegend OG)(LavenderPower Plant)

F1 hybrid autoflowering strain. Good yields and high THC production.

Fatso GMO F1 Auto is a feminised hybrid strain that results from crossing two auto strains, Fatso Auto and Cotton Candy Auto. This Cali-derived, somewhat sativa-leaning, easy to grow, strain offers high yields, very high THC content and its sweet, candy and fuel palate.

Fatso GMO F1 Auto thrives indoors and outdoors. It has better than average mould resistance but still benefits fromadequate ventilation, more so where humidity is quite high. Resistance to pests and plant pathogens is excellent. Plants stay quite short at around 100cm or less indoors, but they should grow a little taller, reaching a height of 130cm, outdoors planted in the ground. The plants' life-cycle is completed in a maximum of 75 days from seed to harvest and, though yields are quoted as being average, this is still quite impressive for an auto. The mix of high resin production and high terpene levels make Fatso GMO F1 Auto a great strain from which to make cannabis extracts.

The terpene profile is sweet and dank - savoury scents of Skunk with pine and floral notes. The taste is sweet candy with hints of fuel. THC production is very high, reaching 26% while CBD is low. The effect is uplifting and well-balanced.

What are F1 Cannabis Strains?

F1 cannabis seeds or plants are the first generation offspring of two parent plants. F1 hybrid seeds or strains are the first generation
offspring of two pure, distinct strains. Note that using two pure lines, the result of intensive inbreeding, is drastically different to simple cross-breeding.

F1 plants have been used for decades throughout the agricultural industry because they offer several advantages; hybrid vigour allows plants to grow bigger more quickly. Plants are more uniform, stable and offer greater resistance to plant pests and diseases. Yields are much higher too, an important consideration.

However, it should be noted that it is not recommended to allow F1 plants to breed for seed crops as the resulting F2 plants will be much less uniform, being less stable and having greater genetic variability. New F1 seeds will need to be purchased or a lengthy and complex F1 breeding project carried out to produce more seedstock.

Brand/breeder
Parental lines
(GMO Cookies x Legend OG) x (Lavender x Power Plant)
Type
Sativa dominant
Colour
Light Green, Purple
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, Hot, Humid, Temperate, Warm
Aroma
Floral, Piney, Skunky
SKU
SMAN-FAGMO-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
3.9
Rating 3.9 out of 5 stars
Based on 18 ratings and 17 reviews
As described
No
Partly
Yes
Yes, 4.6 out of 5, No – Yes
Based on 10 votes
Expected Yield
Below
Expected
Above
Expected, 3.666666666666667 out of 5, Below – Above
Based on 9 votes
Recommend to others
No
Neutral
Yes
Yes, 4.555555555555555 out of 5, No – Yes
Based on 9 votes
Filter
We found matching review(s) Clear filters
Review author:  Anonymous    Review date:  26.06.2026
Review rating: 3.0 out of 5 stars
Verified
 buyer
Purchase date: 
Review text: 
50/50 germination rate
As described: YesExpected Yield: BelowRecommend to others: Yes
Reply from:  Seedsman (28.10.2026):  Thanks so much for your review. Sorry to hear you didn't have the best germination with this strain - did you report the issue to our customer services? Many thanks for sharing the photo - if you'd like to show more we have a friendly new online community on www.community.seedsman.com. Its a place to learn, teach, share ideas and photos, and take part in our many give aways. Also our customer service team are involved there should you ever need any assistance. Best Tom
Review author:  Danny Stanley    Review date:  22.08.2025
Review rating: 5.0 out of 5 stars
Flavour: Excellent Found Strain: Seedsman Website
Verified
 buyer
Purchase date: 
Review text: 
Fatso is just that big fat buds. All seeds Germinated. Very good high.
As described: YesExpected Yield: AboveRecommend to others: Yes
Review author:  Anonymous    Review date:  08.07.2025
Review rating: 3.0 out of 5 stars
Verified
 buyer
Purchase date: 
Review text: 
Again I am a first time grower. 4 of 5 seeds sprouted but I killed them after transplanting. Again my mistake with autos was the transplant. I will be trying again next year with Northern lights auto and feminized. Catalog
Review author:  Kenneth Prentice    Review date:  23.03.2025
Review rating: 5.0 out of 5 stars
Flavour: Excellent Found Strain: Online Browsing
Verified
 buyer
Purchase date: 
Review text: 
The frost on this baby is unreal and it's been like that since it went into flower well looking forward to smoking
As described: YesExpected Yield: AboveRecommend to others: Yes
Review author:  Johnny Sanders    Review date:  15.02.2025
Review rating: 5.0 out of 5 stars
Flavour: Excellent Found Strain: Online Browsing
Verified
 buyer
Purchase date: 
Review text: 
2 of the Fatso's turned purple/lavender the other 1 turned red/purple, They turn color the last 2 weeks of flower, smelled like skunky mango mid way through flower, beautiful plant!
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.

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Fatso GMO F1 Auto Feminised Seeds

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