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Guava Runtz Auto from Fast Buds launches the brand’s new Champions Line, a breeding project designed to combine elite, award-winning genetics from recent cannabis cups into next-generation autoflowers. This F1 hybrid crosses Guava Auto RF3, winner of the Autoflower World Cup, with Mango Runtz F5 Auto from Mephisto Genetics. The result is a terpene-driven collaboration blending Fast Buds’ stabilized in-house line with one of the most respected names in modern autoflower breeding.
The lineage brings together two highly expressive flavor families. Guava Auto RF3 contributes tropical fruit intensity, strong autoflower stability, and heavy resin production developed through multiple refinement cycles. Mango Runtz F5 Auto adds serious terp complexity through its stacked pedigree of Creme de la Chem, Mango Smile, and White Runtz - a combination known for sweet candy gas, exotic fruit notes, and dense trichome coverage. Together they produce a loud terp fusion of tropical guava, ripe mango candy, and creamy Runtz sweetness, backed by the kind of frost and bag appeal that modern connoisseurs expect.
As an early F1 release, Guava Runtz Auto is positioned at the forefront of autoflower breeding innovation. Early testing shows strong hybrid vigor, compact and manageable plant structure, and resin-rich flowers with vibrant tropical aromas already dominating the canopy. Designed for growers who want access to cutting-edge genetics rather than fully commercialized lines, this Champions Line release represents a new direction for Fast Buds - combining proven in-house autos with elite external genetics to push the boundaries of modern autoflower performance.
Autos can be sown in multiple waves through the season for staggered harvests.
Autoflowers follow their own internal clock, making indoor timelines easier to plan from seed to harvest.
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