Daylilies are simply spectacular flowering plants that come back year after year. Grows into Ideal Fragrant Flowering Plants for Tub or Patio Area to Create an Atmosphere Daylilies are a great addition to any garden.. They are easy to grow, provide spectacular color, and come back as a perennial every year. Grows in most zones and grow in most soils, but best in nice rich soil. And there are so many different colors to choose from, so please check our many varieties to add color to your garden throughout the year.