Sundae Frost Auto brings together Sundae Thumper F4 by Mephisto Genetics, awarded Best Hybrid at the American Autoflower Cup 2025, and Frostbanger Auto, winner of Strongest Autoflower 2025 at the Autoflower World Cup.

The intention is to lock in speed, resin production, and visual appeal within a compact autoflower.

Plants are developing in a controlled and predictable way, staying compact while maintaining good lateral expansion. Branching is strong enough to support multiple flower sites, with a natural structure that requires minimal intervention to perform well.

The full cycle is progressing within the expected 70 to 75 day window, with no significant lag between individuals. This level of consistency is a key target for this line, especially in setups where timing matters.

Phenotype Variation Within the Population

Two clear phenotypes are present. Both follow the same growth pattern and finish within the same timeframe, but differ in visual expression.

One remains mostly green from start to finish, with only slight purple or pink tones appearing in the flowers. The second shows a more pronounced shift, with darker leaf coloration developing during flowering, creating a stronger contrast against the buds.

This variation adds visual range without affecting overall performance.

Aroma and Resin Development

The aromatic profile is stable across both phenotypes. Early notes are sweet and fresh, with a light spicy edge that becomes more noticeable as flowering progresses. The profile stays clean and defined, without becoming overly heavy.

Resin production builds evenly, covering the flowers with a consistent layer that continues to increase toward the final stages.

Current Direction

Work on this line is focused on maintaining its speed and uniformity while refining visual traits and terpene clarity. Plants that fall outside the target cycle or show weaker expression are being removed as the run progresses.

Sundae Frost Auto is holding its position as a fast and reliable option, with enough visual variation and terpene quality to stand out, especially for growers aiming to maximize turnover without compromising the final result.