Mutation
Rainbow Mutation
Rainbow is a variant mutation with a ×30 (community-sourced, pending in-game verification) value multiplier.
The Rainbow mutation in Grow a Garden 2 applies a ×30 sell multiplier. From Rainbow weather (Unicorn pet doubles the chance). Confidence: community-reported.
- Type
- Variant (mutually exclusive)
- Multiplier
- ×30Site A: ×25Site C: ×40
- Trigger
- From Rainbow weather (Unicorn pet doubles the chance)
Rainbow only rolls during Rainbow weather, and the Unicorn pet doubles the chance. Because Rainbow weather is itself rare, serious Rainbow farming means logging in during weather windows rather than grinding for it offline — the mutation chance per plant per minute is too low to passively accumulate on an AFK plot.
The right crop to roll Rainbow onto is whatever has the highest base sell value in your plot. A variant multiplier on a low-value Carrot adds little; the same roll on a high-value crop is the kind of payout Rainbow exists for. Layer weather mutations (Electric, Frozen, Starstruck) on top during the same window for compound value.
- Site A calculator: ×25
- Eurogamer (2026-06): ×30
- Site C: ×40
A bundle uses 25×; Eurogamer (2026-06) and Rock Paper Shotgun report 30×. Switched to media-consensus 30× per Council arbitration (2026-06-28, 3:1 majority). Site C (deprecated) reported 40×. Pending in-game verification.
Rainbow is a variant mutation — only one variant can be active at a time. It is mutually exclusive with: gold.
When a variant and weather mutations are both active, the total multiplier is: variant_mult × (1 + Σ weather_mults − count).
Apply Rainbow to any crop in the value calculator to see its effect on sell value. The calculator uses the adopted ×30 value (per cross-source arbitration; see sources above).