Choose crops for your climate
Every city now has a hardiness zone. Crop Farms grow suitable crops at full yield, with penalties or restrictions outside their preferred climate.
Cities have a hardiness zone from 1 to 13, from coldest to warmest. Regions show the range across their cities. Check these values when choosing a location for a farm.
Each crop lists its ideal zones when you choose a production task. Yield is unchanged inside that range, 25% lower one zone outside it, and 50% lower two zones outside it. Farther away, the crop cannot be queued. These rules apply to every Crop Farm at that location.
Harvests already in progress keep their accepted yield. Existing queued crops that no longer fit the climate stay on hold and can be cancelled; compatible work can still proceed. The scale is a simplified climate model for the game.