Mutation Mechanics (2026)

A mutation is a modifier that multiplies a crop's sell value. Two kinds: a variant (Silver / Gold / Rainbow) is a rarity roll — only one ever applies and multiplies cleanly; environmental weather / event / pet mutations stack with diminishing returns, where the total = 1 + Σ(multiplier − 1), not a naive product.

The complete formula is value = base × (weight ÷ base weight)² × one variant × environmental stack, where env stack = 1 + Σ(multiplier − 1). The calculator does all of it for you.

All commonly reported multipliers at the time of writing. The "commonly from" column is a general hint only — exact trigger methods change with game updates, so verify in-game.

Three things multiply the value: weight (squared, relative to the crop's base weight), one variant roll, and the environmental stack. The environmental stack is where people slip up — it is not a plain product.

That is a Carrot (base 22, base weight 0.275 kg) weighing 1.1 kg, with Gold and Wet + Chilled. Weight alone is 16× the base (1.1 ÷ 0.275 = 4, squared = 16×). Wet + Chilled look like ×4 if you multiply them — but the stack is 1 + (2−1) + (2−1) = ×3, not ×4. The calculator applies diminishing returns automatically, so you never overstate value.

Rarity rolls (Gold, Rainbow) are the bottleneck — they're rare. Weather and event mutations are frequent, so even without a rare drop you can stack a respectable multiplier. See which crops to farm to pair the right seed with the right strategy.