Petals are associated with Dragons since Petals are used to get more Dragon Eggs and merging Dragons. Petals are also needed for some Quests to unlock certain areas, and even clean up the fences found in your Home Island.

To get Petals, you will need Dragon Flowers. The Dragons will harvest them for Petals. Similar to Fruit Trees, Dragons will approach these flowers and harvest them for you. When they're ready, tap on the Petal icon above the flower to collect the Petals. You also have a chance to get Petals by collecting the rewards on the ground.