The weather changes by itself while you play. A chip at the top right of the screen shows the current weather and how long it has left, and the first time each kind arrives the game explains it.
| Weather | Growth | Mutation it brings |
|---|---|---|
| Clear | normal | — |
| Rain | +20% faster | Wet (10% base) |
| Frost | 10% slower | Frozen (6% base) |
How often
A weather spell lasts about 1 min 30 s and a new one comes along every 10 min to 15 min.
Big Weather
A few times a day (9:00, 13:00, 18:00, 21:00 on your phone’s clock) a Big Weather event runs for 20 min. During Big Weather, the weather’s own mutation is 1.5× as likely: Frozen goes from 6% to 9% a plant. If notifications are on, the game can remind you when it starts.