Gold
+30%Golden Rain
FIELD GUIDE BETA
Mutations & weather
Know what changes your harvest value, what speeds up your forest, and what simply changes a tree’s appearance.
Checked 2 October 2026 · Beta version 7946
Harvest mutations
Add the bonuses together. Gold (+30%) and Frostglass (+35%) give +65%, so a base value of 100 becomes 165. Three Gold entries give +90%, not 1.3 × 1.3 × 1.3.
Frostglass
+35%Crystal Frost
Thunder
+35%Thunderstorm
Solar
+15%Solar Eclipse
Lunar
+15%Lunar Eclipse
Molten
+40%Lava
Aurora
+20%Aurora
Asteroid
+20%Asteroid Strike
Fairydusted
+40%Fairytale
Harvest mutation calculator
Before other sale effects and final rounding. Repeated mutations are allowed; the limit is three entries.
How do weather mutations land?
A tree must be fully grown and have unclaimed harvest. The weather system samples harvest-bearing trees; it does not give every tree an independent roll each tick. Up to three mutation entries can accumulate, including repeats.
Mutation Chance Boost improves the per-roll chance and the weather’s roll allowance. It does not raise the three-entry cap. Collecting removes the unclaimed harvest that could receive another mutation.
Weather is one source of mutations; other mechanics can grant them as rewards.
Weather reference
These are contributions to growth and harvest rate. Other bonuses are combined by the game.
Scroll the table sideways to see all effects.
| Weather | Growth | Harvest | Duration | Harvest mutation |
|---|---|---|---|---|
| Clear | No bonus | No bonus | — | None |
| Rain | +30% | No bonus | 3m | None |
| Golden Rain | +30% | No bonus | 3m | Gold |
| Crystal Frost | +15% | +15% | 3m | Frostglass |
| Enchanted Fog | +12.5% | +10% | 3m | None |
| Thunderstorm | +35% | No bonus | 3m | Thunder |
| Solar Eclipse | +25% | +25% | 3m | Solar |
| Lunar Eclipse | +25% | +25% | 3m | Lunar |
| Lava | +20% | +20% | 3m | Molten |
| Asteroid Strike | +15% | +25% | 3m | Asteroid |
| Aurora | +30% | +10% | 3m | Aurora |
| Fairytale | +20% | +20% | 3m 30s | Fairydusted |
| Rainbow Prism | +25% | +25% | 3m | None |
Tree colours & auras
A colour or aura alone is not a harvest sell-value mutation. Favoured weather biases a colour selection; it never guarantees the result.
| Tree colour | Favoured weather |
|---|---|
| Frozen | Crystal Frost |
| Golden | Golden Rain, Solar Eclipse |
| Blaze | Lava |
| Sakura | Enchanted Fog |
| Verdant | Enchanted Fog |
| Amethyst | Lunar Eclipse |
| Sapphire | Rain |
| Toxic | Solar Eclipse |
| Bubblegum | Thunderstorm |
| Rainbow | No specific weather |
Auras first roll whether an effect appears, then which eligible effect it is. Aura luck improves how often an aura appears; it does not change a rare aura’s relative share of the second roll. Fairy-only auras are outside the ordinary roll.