Dandelions will appear at random in your forest. Interact with these by tapping and selecting a moth and then dragging to fly it through the dandelion. This will release all the floating seeds and you then need to fly your moth around and catch as many seeds as possible before they disappear! Seeds will begin to flash before they disappear to let you know time is almost up. Catching seeds earns you honeydew and counts toward the Seed Sequester goals in your Flutterpedia.