Most roses begin to bloom in early spring, soon after the last winter frost. While some varieties only bloom once each year, many gardeners use techniques like pruning to encourage additional bloom growth several times over the year.
Roses need several hours of sunlight each day to bloom, which is largely why they first bloom in early spring. After the first bloom occurs, gardeners should prune the branches and remove dead blossoms as they wilt. This gives the plant the opportunity to spend its resources creating new blooms to enjoy. As the winter arrives, the plant must receive proper protection from the elements, as snow and ice can destroy rose plants and prevent blooms the following season.