Mendo Guava Auto

Mendo Guava Auto is a Champions Line release from FastBuds, available as feminised autoflowering seeds. It’s an early F1 experimental cross of Mendo Breath Auto IBL (GMO Auto x Mendo Auto) x Guava Auto RF3, pairing creamy, resin-heavy Mendo character with the brighter tropical fruit side of Guava Auto.

The breeding story is a useful part of the appeal here. FastBuds uses the same exclusive Mendo Breath Auto IBL from Atlas Seed that appeared in its Mendo Frost collaboration, then crosses it with Guava Auto RF3, described as an enhanced version of a standout performer from recent cup competitions. This is part of the brand’s Champions Line, built around elite 2025 cup-winning genetics and limited collaborative projects at an early stage.

Genetically, Mendo Guava Auto is listed as a 45% sativa and 55% indica hybrid. THC is given at 26–30%, with CBD below 1%. FastBuds presents it as a modern autoflower with hybrid vigour, compact-to-medium structure in early observations, and dense flowers that build a heavy trichome coat early in bloom.

Plants are listed as 70–120 cm tall, with an XL size rating, so expect more presence than the word compact might suggest. It’s suitable for indoor, outdoor, greenhouse and mixlight setups, with a flowering time of 8–10 weeks. Indoor harvests are listed at 450–600 g/m², while outdoor plants are given at 60–220 g per plant. Climate suitability covers very hot, hot, moderate, cold and very cold conditions in the breeder’s rating.

The terpene profile is the bit that makes this cross easy to understand. Mendo Guava Auto mixes creamy Mendo depth with fresh fruit, guava, sweetness and a touch of spice. The smell is rated very strong, and FastBuds notes aromatic intensity across the early population, so it’s not a quiet, background sort of cultivar.

Mendo Guava Auto should suit collectors and growers who like fresh autoflower projects with serious resin, strong aroma and modern US-style parentage. It’s also one to look at if you want the richer Mendo side softened by brighter exotic fruit rather than a straight gas or dessert profile.