Colors bring life to a flower garden, drawing attention to certain parts of your landscape, but mix, match and use colors properly so the garden design does not look haphazard and chaotic. Red, orange and yellow are warm colors that create feelings of security, passion and excitement. Green, blue and purple are cool colors creating calmness, serenity and relaxation.
Blanket flowers (Gaillardia x grandiflora) grow 2 to 3 feet tall and spread 2 feet wide. They produce showy blossoms throughout the summer that are yellow and orange daisy shaped with ragged petal edges. It also has hairy leaves with deep notches. This hot colored perennial is drought tolerant and thrives in coastal conditions. Rich soil produces excessive growth in this flower and it will flop over.
Thread-leaved coreopsis (coreopsis verticillata) grows 1 to 3 feet tall and 2 to 3 feet wide. This perennial flower produces 1 to 2 inch starry flowers in a butter yellow to golden yellow shade. It blossoms throughout the summer over threadlike leaves. Coreopsis likes full sun, but will tolerate light shade. Once established, this flower is drought tolerant.
Cupid's dart (Catananche caerulea) grows 18 to 24 inches tall and 10 to 12 inches wide. The 2 inch blue flowers are daisy-like, and the perennial foliage is wooly and narrow. Cupid's dart is a cool colored flower that is heat tolerant. Divide this flower yearly to promote longevity since soil compaction causes a shortened plant life.
Balloon flower (Platycodon grandiflorus) reaches 2 to 3 feet tall and 1 to 2 feet wide. The rich blue flowers are five pointed petals that form a saucer-shaped blossom. The flower buds are inflated, so they resemble tiny balloons. Remove dying flowers to promote the blossoming of more blooms. Sow the seeds of this flower outside in fall. This flower will self-seed itself if allowed to produce seeds.