Perennial Full Sun Plants

Some portions of the landscape require heat-tolerant plants. These full-sun locations need strong plants that have adapted to intense growing conditions. Perennials add color to the landscape and provide permanence in a plant that returns each year. Choosing perennials for full sun requires evaluation of actual blooming times. Staggering bloom times allows for a continual colorful display in the flower bed. Full-sun perennial plants require regular watering, pruning and division when the plant outgrows garden areas.

Threadleaf Coreopsis

Brilliant masses of color often overpower other plants in the garden. Some gardeners desire simple plants with bright flowers that enhance the surrounding riotous blooms. Threadleaf coreopsis fills those spaces perfectly with simple foliage and flowers. Tickseed coreopsis features elongated thin leaves and bright yellow flowers produced in the early summer. This plant grows up to 2 feet tall and requires regular pruning to encourage more blooms. Coreopsis tolerates drought conditions and is hardy in U.S. Department of Agriculture Plant Hardiness zones 3 to 9.

Bearded Iris

One early bloomer provides stunning flowers in the full-sun garden. Bearded iris traditionally served as a mainstay plant in the cottage garden. The iris family of plant contains flowering varieties ranging from 8-inch dwarf mature plants to towering stems up to 3 feet tall. Iris comes in an array of colors to suit any garden design scheme. Bearded iris foliage can be solid green or with a grayish hue to the leaves. This plant grows well in zones 3 to 10 but requires mulch covering in zones 3 and 4.


You may see brilliant orange or yellow trumpet-shaped daylilies along the roadside in early summer. Daylilies represent one of the hardiest plants used by landscapers to add perennial beauty to the full-sun garden. This low-maintenance plant requires minimal care, tolerates dry conditions and produces blooms throughout the summer with diligent pruning of dead flowers. Daylily is hardy in zones 3 to 10. Very few plants require as little care as the daylily with such a great reward. Maintenance transplanting every 3 to 4 years will help maintain the size of this beautiful perennial bloomer.

Russian Sage

Adding plants from the blue range of the color palette often requires the purchase of annual plants. Consider adding Russian sage to the landscape for wonderful perennial coverage. Russian sage features delicate green/gray foliage in arching long stems ending in light blue flowers. Russian sage holds blooms for up to 3 months and offers gardeners continued floral display through the majority of the summer months. This plant grows up to 5 feet tall and prefers well-drained soil. This plant is hardy in zones 5 to 9.

Keywords: full sun perennials, full sun plants, perennial full sun plants

About this Author

S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.