Ostara is a Wiccan holiday and one of their eight Sabbats. Ostara celebrates the spring equinox. The word Ostara comes from the Anglo-Saxon goddess name, Eostre. Eostre represented spring and new beginnings.
The celebration of spring is present in many ancient customs, across all cultures, and it seems that Wicca has borrowed from many of them for Ostara. Like many other spring celebrations in other cultures, Ostara symbolizes fertility, rebirth, and renewal. This time of year marked the beginning of the agricultural cycle, and farmers would start planting seeds.
Many of the symbols of Ostara have roots in other traditions, and the use of rabbits and hares is one such example. In medieval times in Europe, the March hare was seen as a fertility symbol, and a sign of spring.
Modern day Wiccans or pagans might go outside to meditate and perform a simple ritual to welcome the spring. Another common way to celebrate the coming spring is to plant seeds. Some families incorporate seasonal egg hunts and eat chocolate bunnys, with their kids to help them get in the spirit of the event.