Ancient Mutation
Powerful 7.5× green mutation from Cthulhu boss attacks during Heavy Rain. The giant entity periodically strikes crops, applying Ancient to nearby fruits. Defeat Cthulhu (5 damage per Shovel hit) to earn Lumenbark Seed and trigger Strange Weather.
Mutation stats
- Multiplier
- 7.5×
- Trigger
- Heavy Rain — Cthulhu boss
- Type
- special
- ID
- ancient
How to get Ancient
The Ancient mutation is triggered by Heavy Rain — Cthulhu boss. For most players, the easiest way to plan around triggers is to watch the current weather rotation and plant during the correct window.
Use the Weather Wiki to see which events can roll Ancient, then compare outcomes in the calculator.
Stacking notes
Mutations stack additively in the game’s value formula (the calculator uses the same math). In practice, each mutation contributes an “extra” bonus above 1×, so combining multiple strong mutations can outperform a single mid-tier one.
If you’re optimizing ROI, treat high-multiplier windows (like Shocked or Starstruck) as “plant now” moments, then let ripeness multipliers (e.g. Lush 3×) scale the final result.