Plumbago auriculata 'Dark Blue', commonly known as Cape Leadwort, is a semi-evergreen shrub prized for its prolific clusters of deep blue flowers and attractive foliage. This cultivar typically forms an arching, spreading mound of slender stems adorned with glossy, dark green leaves. The vibrant blue flowers bloom abundantly from summer to fall, attracting pollinators like butterflies and bees to the garden. 'Dark Blue' is versatile and can be used as a ground cover, in borders, or as a container plant. It is relatively low-maintenance and thrives in well-drained soil and full sun to partial shade conditions.