What is the longest blooming perennial?
Rozanne® cranesbill. Known as the geranium of the millennium, rozanne® cranesbill can bloom for over 3 months, filling your garden with flowers all season long. The 2008 perennial of the year, rozanne has long been proven to keep your garden flowering for as long as possible. Cranesbill geranium- they grow throughout the summer with very little maintenance. Geraniums are easy to grow and thrive in both sunny and shady locations. They are one of the most popular perennials for a few reasons. They are low maintenance.