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GMO Auto 🏆 Autoflower World Cup Champion 2026Buy Now

Guava Sundae Auto™

Loud Terps. Creamy Power.
Pack
1
fem
13,00 €
In stock
Pack
1 Feminized seed
13,00 € / Seed
1 Feminized seed
13,00 € / Seed
2 Feminized seeds
12,00 € / Seed
3 Feminized seeds
12,00 € / Seed
5 Feminized seeds
11,00 € / Seed
10 Feminized seeds
9,90 € / Seed
25 Feminized seeds
8,60 € / Seed
50 Feminized seeds
7,30 € / Seed
100 Feminized seeds
4,99 € / Seed
500 Feminized seeds
3,00 € / Seed
1000 Feminized seeds
2,00 € / Seed
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  • Genetics: Guava Sundae Auto = Guava Auto RF3 x Sundae Thumper F4.
  • Seed Type: F1 Hybrid Feminized Autoflower.
  • Champion Cross. World Cup winner × American Cup champion.
  • Terp Performance. Tropical guava × creamy gelato
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Tech Radar

Guava Sundae Auto™
Climate Intended
Very Hot
Hot
Moderate
Cold
Very Cold
Genes
Sativa
Mostly Sativa
Hybrid
Mostly Indica
Indica
Smell
Very Strong
Strong
Moderate
No filter needed
High
Medium
Low

Tech Specs

Parameter Value
Taste Fruits, Guava, Sweet
THC 26 – 30 %
CBD < 1%
Harvest EU Indoor 450 – 600 gr/m2
Harvest US Indoor 1.5 – 2 oz/ft2
Harvest EU Outdoor 60 – 300 gr/plant
Harvest US Outdoor 2 – 11 oz/plant
Size XXL
Height 70 – 120 cm
Height US 28 – 47 inches
Flowering 8 – 9 weeks
Room Indoor/Outdoor/Greenhouse/Mixlight
Gender 100% Female
Genes Hybrid
Genes Sativa 50%/Indica 50%
Genetics Guava Auto RF3 × Sundae Thumper F4
Seed Type F1 Hybrid Feminized Autoflower

Genetic tree

Guava Sundae Auto™️
Sundae Thumper Auto
Gelato #45
Girl Scout Cookies
Sunset Sherbert
Forum Stomper Auto
Forum Cookies
Sour Stomper Auto
Guava Auto RF3
Guava Auto™
Gorilla Cookies Auto
Kosher Cake Auto
Tropicana Cookies Auto
Genetic tree — Guava Sundae Auto™. Source: GrowDiaries.com

Description

Guava Sundae Auto is a next-generation autoflower built from two proven, award-winning genetics.

This cross combines Guava Auto RF3, a World Cup winner, with Sundae Thumper (Mephisto Genetics), an American Cup champion. The objective was to bring together structure, yield potential, and terpene performance into a single, high-performing line.

From the start, this hybrid shows aggressive growth and strong hybrid vigor, developing into a large, tall plant with a solid frame and consistent structure across the population. She is a high-output plant, capable of delivering serious yields when pushed correctly, with dense stacking and efficient light distribution thanks to well-balanced internodal spacing.

Flowers come in large, heavy, and tightly formed, with strong bag appeal and a clean, uniform finish. The terpene profile hits hard: fresh tropical guava upfront, backed by creamy gelato depth, creating a rich, loud, and fully developed expression. Guava Sundae Auto is bred for growers who want performance, intensity, and results: all in one run.

Packaging

Sealed to ensure authenticity
Waterproof Coating
Aluminium interior lining
Pack front
Pack seed
Pack back
Protective sticker
QR code
Scratchable serial number

Effects

Happy Happy
50% of people reported feeling Happy
Relaxed Relaxed
50% of people reported feeling Relaxed
Uplifted Uplifted
50% of people reported feeling Uplifted
Creative Creative
25% of people reported feeling Creative
Energetic Energetic
25% of people reported feeling Energetic
Giggly Giggly
25% of people reported feeling Giggly
Talkative Talkative
25% of people reported feeling Talkative

Compare with similar strains

Rating
THC
Indoor
Outdoor
Size
Height
Flowering
Genes Level
Genes
26 – 30 %
450 – 600 gr/m2
60 – 300 gr/plant
XXL
70 – 120 cm
8 – 9 weeks
Hybrid
Sativa 50%/Indica 50%
Up to 28.5%
550 – 650 gr/m2
50 – 350 gr/plant
XXL
100 – 150 cm
10 weeks
Hybrid
Sativa 45%/Indica 55%
Up to 28.4%
450 – 600 gr/m2
60 – 300 gr/plant
XXL
110 – 120 cm
10 weeks
Hybrid
Sativa 55%/Indica 45%
Up to 27.6%
550 – 650 gr/m2
50 – 350 gr/plant
XXL
100 – 150 cm
9 weeks
Mostly indica
Sativa 30%/Indica 70%
Up to 27%
400 – 500 gr/m2
50 – 150 gr/plant
XL
70 – 110 cm
8 – 9 weeks
Mostly indica
Sativa 40%/Indica 60%
Up to 25%
450 – 600 gr/m2
50 – 250 gr/plant
XXL
70 – 120 cm
9 – 10 weeks
Sativa 60%/Indica 40%
Up to 29%
450 – 550 gr/m2
50 – 150 gr/plant
XL
70 – 120 cm
8 – 9 weeks
Hybrid
Sativa 60%/Indica 40%
Up to 28.5%
450 – 550 gr/m2
60 – 200 gr/plant
XL
80 – 120 cm
8 weeks
Hybrid
Sativa 30%/Indica 70%
Up to 29%
400 – 550 gr/m2
50 – 250 gr/plant
XL
80 – 120 cm
9 – 10 weeks
Hybrid
Sativa 55%/Indica 45%
Up to 28%
450 – 550 gr/m2
60 – 200 gr/plant
XL
70 – 120 cm
8 – 9 weeks
Hybrid
Sativa 50%/Indica 50%
Up to 23%
400 – 550 gr/m2
50 – 150 gr/plant
L
60 – 100 cm
8 weeks
Sativa 55%/Indica 45%
Up to 26%
450 – 550 gr/m2
50 – 170 gr/plant
XL
80 – 120 cm
9 – 10 weeks
Sativa 20%/Indica 80%
Up to 29.5%
450 – 550 gr/m2
60 – 200 gr/plant
XL
70 – 120 cm
9 weeks
Sativa 40%/Indica 60%
Up to 31%
500 – 600 gr/m2
80 – 300 gr/plant
XXL
80 – 150 cm
8 – 9 weeks
Sativa 25%/Indica 75%
Up to 31%
500 – 600 gr/m2
70 – 270 gr/plant
XL
80 – 120 cm
9 – 10 weeks
Sativa 45%/Indica 55%

Customer reviews

5 of 5
13 customer ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 star
0%

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D
DeAzNuTz
Created 13 March
Sounds interesting 🧐
When are going to upgrade your Papaya Cookies 🍪 Auto? Personally, I think if you cross Papaya Cookies x Gorilla 🦍 Cookies 🍪 you may have something special but your breeder is the expert and he'll decide what's the next best thing for Papaya Cookies upgrade/level-up. Thanks for being awesome 🤜💥🤛
11 people found this helpful
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H
He
Created 29 April
So far Awsome...!
I am stocked that Guava Sundae is here. Two top shelf strains in one Awsome desert package. Since there is no suggested help on how she grows I am going to be very careful on what she wants. Everything is going down to its lowest levels and will increase as needed. Normally I can adjust fertilizers and timers as per the suggested Info. Normally I will drop ten seeds at a time to make sure I have a very good crop going but since I'm having to feel her out I am taking the beginner's route and work them in a set of two. Once I find her sweet spots I will drop them here for all to get knowledge on how she reacts. Hope all is well.
9 people found this helpful
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C
Chautin
Created 19 March
Crosses
I think the apricot x guava x gorilla cookies,this would be the ultimate cross,and it would be epic
5 people found this helpful
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M
MERCURIAL MIND 🌬
Created 1 April
Wowy zowy
FB & Mephisto 🛸 Am I dreaming ? Surely the World's best geneticists crafting the art 🌬
4 people found this helpful
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M
Mr.WeeedWorld
Created 15 June
What A Rocket ...
Guava Sundae is now operating in a league of its own. What started as a promising plant a few weeks ago has evolved into one of the absolute standouts of this entire grow. The long, massive colas keep stacking flower after flower and are already coated in an incredible layer of sparkling trichomes. What impresses me the most is the insane frost production. Even the larger sugar leaves are slowly disappearing beneath a thick blanket of resin, making the entire plant look as if it has been dusted with powdered sugar. At the same time, the outstanding structure allows nearly every branch to produce high-quality flowers from top to bottom. 🍨❄️ Guava Sundae currently delivers everything you could ask for from a top-tier autoflower: size, density, resin production, and stunning visual appeal that immediately catches everyone's attention. 🏆 An absolute standout in this run and a serious contender for the crown of the tent. If she continues performing like this over the final weeks, she could easily become one of the most impressive Fast Buds plants I have ever grown. 👑🔥💎🍨❄️
3 people found this helpful
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C
Castrellon
Created 11 March
Drooling
FASTBUDS and the team do it again can’t wait to try this one !! Love from London keep this flavours coming
3 people found this helpful
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H
Herbalicious420
Created 19 May
Guava Sundae Auto
Im going into week 6 and she is slowly making her flower transition. She seems to be responding well to low maintenance training so far. She looks like she will be able to handle a good feeding cycle as she does well with only distilled water up to this point minus the soil fertilizers. Happy Frog does wonders for this strain.
1 people found this helpful
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O
Odom
Created 29 April
Question
I have a question how does the feeding of autos differ from the standard photos? Or does it? I have not have the best of luck with autos but i keep trying
1 people found this helpful
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H
Hjermstad
Created 4 April
5 star
5 stars thanks for always having great genetics.
1 people found this helpful
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E
EtV
Created 1 April
Gelato
Waiting on that gelato revamp
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Guava Sundae Auto™
Guava Sundae Auto™' pack backside
Guava Sundae Auto™
Guava Sundae Auto™' pack frontside

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Customer questions & answers

How does the Champions Line differ from your regular strains?
The Champions Line features crosses between our genetics and other breeders’ award-winning strains, whereas our “regular” autoflowers are established genetic lines developed from our own proprietary genetics.
Why are these F1 seeds? Are they less uniform?
These seeds are produced from our experimental projects and are especially created for those who want to be among the first to try exciting new crosses and the next big thing. We don’t plan to continue production unless they pass all our internal testing standards. And yes, F1 seeds do tend to be less uniform; however, they are extremely vigorous and deliver higher overall performance. As we continue to work on these lines, they will become more and more stable, just like our “regular” autoflower seed lines.
What environments is Guava Sundae Auto best suited for?
F1 plants are very hardy and resilient. As long as you provide good environmental conditions, whether indoors, outdoors, or in greenhouses, they will produce excellent results.
Which parent strains were used to create Guava Sundae Auto?
Guava Sundae Auto is a cross between Sundae Thumper F4 (Gelato #45 x Forum Stomper) and our Guava RF3, which comes from ((Gorilla Cookies Auto F5 x Kosher Cake) x Tropicana Cookies Auto F5).
How was the selection process for this strain?
Our Champions Line seeks to produce seed crosses exclusively with award-winning strains. In this case, we wanted to experiment with Sundae Thumper F4 from Mephisto and our Guava RF3 to create a creamy twist on the fruity Guava terps. Sundae Thumper F4 won Best Hybrid at the American Autoflower Cup 2025 and brings many strong qualities that can only enhance our Guava RF3.

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