Depending on where they are grown, ranunculus bulbs can be treated as either annuals or perennials. Gardeners in Zones 8-10 can allow their ranunculus bulbs to overwinter in the ground, and they will bloom again in the following summer. In Zones 3-7, the bulbs should be lifted in fall and stored in a cool, dry place, such as a garage or basement, until replanting them in spring. Because the bulbs do not always store well, some growers in cooler climates choose to leave the bulbs to die in the ground at the end of the season and plant new ones the next spring.