Plumbago comes in blue and white, but the blue is one of the most striking shades found in the landscape. This is a sprawling, tropical perennial shrub. It starts off slowly but once warm, moist weather arrives in early summer it makes rapid growth and flowers throughout the summer. Stokes Aster also comes in blue and white varieties. It requires full sun or partial shade and well-drained soil.
Establishment is from seeds, divisions or container grown plants.
Vinca, or periwinkle, is available in several colors including a blue, or almost blue. Vinca is often used as a ground cover or in mass plantings. It begins flowering in March and continues through July. Blue ginger, though not a true ginger, is a beautiful plant that flowers in late summer and early fall. Plant it in full sun or partial shade.