Blue Ground Cover Plants

Pyramidal Ajuga

• Pyramidal ajuga (Ajuga pyramidalis) is a slow-growing ground cover that grows to a mature height of three to four inches with a one-foot spread. The coarse-textured ground cover creates a dense, low mat and blooms with violet-blue flowers in late spring. The plant has spatula shaped, four-inch, dark green foliage and grows best in areas of sun or partial shade. Pyramidal ajuga is well tolerant of clay soil but prefers to grow in well-drained, sandy ground. The plant spreads with short rhizomes.

Blue Catmint

• Blue catmint (Nepeta x faasenii) is a semi-evergreen ground cover also referred to as faasen's catmint. The ground cover grows to a mature height of one and a half to two feet with a two-to-three-foot spread and blooms with half-inch spikes of violet-blue flowers during summer. Blue catmint grows best in areas of sun to light shade and adapts well to a wide range of well-drained soil. The one-inch gray green foliage is oval with rounded teeth and produces an aroma when crushed. Blue catmint has a moderate growth rate and a good tolerance for drought.

Leadwort

• Leadwort (Ceratostigma plumbaginoides) is a semi-evergreen ground cover also referred to as dwarf plumbago. The ground cover has a moderate to fast growth rate, growing to a mature height of six to 10 inches. Leadwort has dull and almost platinum one-and-a-half-inch foliage that takes on a copper and bronze shade in the fall. The plant blooms with clusters of half-inch, five-petaled blue flowers in midsummer and grows best in areas of sun to light shade. Though the plant tolerates sand and clay it prefers to grow in a rich, well-drained, acidic soil.