Fragrant perennial plants, including herbs like lavender and showy flowers like phlox, delight the senses. The sweet perfume of flower blossoms on the spring and summer air enhances the garden area—and many fragrant perennial plants also attract pollinators. Many gardeners like to plant fragrant perennials near entrances and walkways where they'll welcome visitors. Others like to cut fragrant flowers for indoor cut-flower displays. Because perennials come back year after year, they're a great choice for adding fragrance to the garden. When buying fragrant perennials for sale online, make sure they will grow in your grow zone. Next consider their light requirements (full sun, partial shade or full shade), soil requirements, mature height and spread, bloom time and flower colors.