When considering what flowers to plant in the sun, you should know that full sun means at least six hours of direct sunlight a day. It also is important to plan a sun garden based on what time of day the light hits the area. The afternoon sun is much hotter than morning sunlight. Plant your flowers where they can get at least a little morning sunlight. The plants will get the sun they need without too much stress from the heat.
Coreopsis (Coreopsis grandiflora) is commonly known as tickseed. This flower is a member of the aster family. The plant grows in a clump reaching a height of 1 1/2 to 4 feet and 2 to 3 inches in diameter. The plant produces dark green leaves and yellow or deep gold flowers. The flowers are 2 to 3 inches in diameter and bloom from June through September. The flower is native to the Southeastern United States and is salt tolerant. Plant tickseed in soil that is moist to dry. The area should receive partial or full sun. The plant is works best in USDA Hardiness Zones 5 to 10.
Cherokee rose (Rosa laevigata) is a member of the rose family. The plant is an evergreen climbing rose that grows from 10 to 12 feet tall and about 15 feet wide. The plant features evergreen, compound leaves made up of three oval-shaped leaflets. The 1-inch to 3-1/2-inch leaflets are about 1 to 2 inches wide. The white flowers measure from 3 1/2 to 4 inches in diameter and bloom in the spring. The plant is a native of China. It prefers full sun and well-drained, fertile soils. The plant works best in USDA Hardiness Zones 7 to 9.
Jade vine (Strongylodon macrobotrys) is commonly known as emerald creeper. The vine is an evergreen that can grow as long as 70 feet. Jade vine has compound leaves made up of three oblong leaflets from 3 to 5 inches long. Blue-green, claw-shaped flowers bloom in the spring and early summer. The flowers are about 3 to 5 inches in length, and they grow in hanging clusters about 5 feet long. The flowers give way to cylindrical-shaped seed pods that grow to about 2 inches long. The plant is a native of the Philippines. It needs full sun with some shade in the afternoon. Choose an area with soil that is very moist in the summer and less moist in the winter. The plant is suitable for USDA Hardiness Zones 10 to 11.