Choose another country or region to see content specific to your location.

Continue

Guava Sundae Auto

Loud Terps. Creamy Power.

5 of 5 Add review

Pack

fem

13,00 €

Coming soon

Enter email for restock notification.

Notify me

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

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 part of our new Champions Line, a breeding project built around combining the most awarded autoflower genetics into new performance driven hybrids. This early F1 release brings together two elite winners: our Guava Auto RF3, champion of the latest Autoflower World Cup, and Sundae Thumper F4 by Mephisto Genetics (Gelato #45 x Forum Stomper), awarded Best Autoflower Hybrid at the American Autoflower Cup 2025.

The objective behind this cross was to unite Guava’s explosive tropical intensity and proven performance with Sundae Thumper’s resin production, and creamy terpene profile, creating a balanced, flavor forward hybrid built from true champions.

From the early stages, Guava Sundae shows strong F1 hybrid vigor, developing medium-sized, bushy plants with sturdy lateral branching. She responds well to light training or leaf tucking, encouraging multiple dense colas and strong yield potential relative to her size.

Packaging

Sealed to ensure authenticity

Waterproof Coating

Aluminium interior lining

Protective sticker

QR code

Scratchable serial number

Customer reviews

customer ratings

5 stars

4 stars

3 stars

2 stars

1 star

Review this strain

Share your thoughts with other customers

Add comment or review

Read reviews that mention

No customer reviews

Guava Sundae Auto

Continue Shopping Proceed to checkout View Cart

Frequently bought together

13,00 €

Gorilla Z Auto

13,00 €

Guava Auto™

13,00 €

Papaya Cookies Auto™

16,00 €

Banana Purple Punch Auto RF3

13,00 €

Lemon Cherry Cookies Auto

13,00 €

Frostbanger Auto™

GrowDiaries reviews

Join the community and make your own diaries!

Read this to improve your grow

Advanced F1 Compatibility Project

This is an F1 project currently in progress. The idea behind this run is to combine some of our most advanced and well-worked lines: Banana Purple Punch RF3, Cherry Cola RF3 and Gorilla Cookies F6, ...

Guava Auto RF3 Pheno Check

Honestly, I don’t even know where to start. Everything began as a crazy mix of three completely different autos:Gorilla Cookies x Kosher Cake x Tropicana Cookies. The first results ...

Testing New Creations by Crossing Multiple Genetics

Can’t say much here, just crossed something ours, with something that's not from our catalogue. But no worries, if we're gonna release that, we'll tell the lineage and all the pertinent ...

Harvest day at our pheno hunt room

All the most interesting new genetics for 2025 (at least in our opinion) have finally completed their cycle. Data has been collected, notes taken, and conclusions are starting to form. The breeding ...

8,90 €

420 Geotextile Autoflower Pot

8,90 €

Geotextile Autoflower Pot 2025

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.