Guava Sundae Auto Autoflower by Fast Buds

Information on Guava Sundae Auto

Guava Sundae Auto is the latest addition to Fast Buds' Champions Line, a selection reserved for the seed bank's most ambitious crosses. This first-generation feminized autoflower (F1) is born from the union of two award-winning genetics in their respective international competitions, bringing that pedigree to a top-tier aromatic and productive profile.

Award-winning genetics 

Guava Sundae Auto is the result of crossing Guava Auto RF3, Fast Buds' own genetics that won the Autoflower World Cup and Sundae Thumper F4 from Mephisto Genetics, recognized with the Best Hybrid award at the American Autoflower Cup 2025. Behind Guava Auto RF3 are Gorilla Cookies Auto F5, Kosher Cake, and Tropicana Cookies Auto F5; Sundae Thumper F4, for its part, combines Gelato #45 (Girl Scout Cookies × Sunset Sherbert) with Forum Stomper Auto (Forum Cookies × Sour Stomper Auto).

Its F1 status guarantees maximum hybrid vigor, although Fast Buds advises that, being an experimental line, some phenotypic variability may appear between plants, something inherent and expected in this type of cross.

Vigorous cultivation indoors and outdoors

Indoors, Guava Sundae Auto can express two distinct profiles depending on the predominant phenotype: some specimens develop a large, tall structure with balanced internodal spacing that favors light penetration, while others show a more compact and bushy structure with abundant lateral branching. Both profiles respond well to gentle training techniques such as LST or leaf tucking, which allows developing multiple colas with large buds, compact and with excellent visual finish. Resin production is described as high, and the early vigor characteristic of Fast Buds' F1s is noticeable from the first stages of the cycle.

The variety is also confirmed for outdoor and greenhouse cultivation, where the vigor inherited from its parents should translate into good adaptability to different environments and conditions.

Aromas, flavors, and effects of an elite cross

The aromatic profile of Guava Sundae Auto revolves around a fresh tropical guava that is well defined, enriched by creamy notes that evoke classic gelato. On the palate, that sweet guava leads the experience with a creamy and sweet background that completes an expression described by Fast Buds as rich and intense.

As for effects, this variety offers a balanced hybrid profile, with a combination of stimulation and relaxation that doesn't lean markedly toward either pole, making it adaptable to different moments and contexts of use.

Specifications on Guava Sundae Auto