At the start of each day, every possible 3x3 grid of crops (including overlaps) has a 1% chance to grow into a giant crop as long as the center crop is fully-grown and watered, and all constituent crops are of the same type. Giant crops won't necessarily appear on the day the crops finish growing; it can happen any day those criteria are met.<ref>See <samp>Crop::newDay</samp> in the game code.</ref> | At the start of each day, every possible 3x3 grid of crops (including overlaps) has a 1% chance to grow into a giant crop as long as the center crop is fully-grown and watered, and all constituent crops are of the same type. Giant crops won't necessarily appear on the day the crops finish growing; it can happen any day those criteria are met.<ref>See <samp>Crop::newDay</samp> in the game code.</ref> |