One perennial flower is the impatien.
perennial
ferns and perennial flowers
Some sentence examples for the word perennial are: A perennial is a plant that lives from year to year. A tree is a perennial. Irises, daffodils, tulips, and other flowers are perennials.
Each variety of perennial blooms at different times.
Helleborus.
Most Lillies grow from a bulb so they are perennial flowers.
Most Lillies grow from a bulb so they are perennial flowers.
I have always preferred perennial flowers over annuals.
Lithadora
The type of flowers that bloom every year without replanting includes perennial flowers. Roses, Plumbago, and hibiscus flowers are all examples of those perennial flowers.
Columbines. Columbines are beautiful and easy to manage. They attract humming birds too! Or if you don't like them, use this link to see a whole list of perennial flowers you can choose from. http://home.howstuffworks.com/perennial-flowers.htm
Perennial flowers offer garden color and texture from spring through autumn. In contrast with annual flowers, perennials typically return each year through growth from their own root-stock. Selection of perennial flowers that are native will encourage a garden of perennials that return each year bringing beauty and sensory pleasure. Prior to planting perennial flowers, turn the soil and add a bottom layer of dried leaves to protect from drought.