How do the flowers work?

Flowers are needed to "level up" which opens up another scene for you to play. How many more you need for the next level is indicated on the main island screen, top right, next to the Flower icon. As you add Flowers to your island, that count will reach 0, then you will level up. Any additional Flower value will go toward the Flowers needed for the next level.

Flowers can be earned in several ways: buying decoration, upgrading buildings, renovating landmarks, and sending Jack's plane on a flower delivery. When you buy decoration, the construction must be complete and the red ribbon removed before its Flower value will count. Buying decoration of higher Flower value will get you further in the game.