Rainbow Mutation

Rainbow is the rare growth mutation — a cycling, sparkling crop worth roughly 20× its base value, and the most sought-after non-event mutation in the game. It can roll at random, is boosted during the Rainbow Event, and the Unicorn pet doubles your chance at it. It is far rarer than Gold.

Mutations in Grow a Garden 2 do not stack — a crop carries one mutation at a time, so a higher-value mutation overwrites a weaker one. Multipliers are community-reported and disagree between sources; verify in-game. See the best mutations ranking and the value calculator to compare them.