Forget-me-not (Myosotis sylvatica). Must-haves for lightly shaded woodland gardens, these much-loved plants bear tiny but exquisite blue flowers in spring in mild climates. ‘Baby Blue’, a hybrid from Proven Winners, has true blue flowers and grows 6 to 8 inches tall. Photo courtesy of Proven Winners.
Crested iris, sometimes known as woodland iris, is a native of eastern North America and can be found in variety of forms and patterns in blue and white. Once established, they are carefree, cheery groundcovers for the woodland garden.
Moss Verbena may end up being your favorite groundcover. It grows between 6 to 12 inches tall, but has a spreading capability of up to 5 feet. It's easy to grow, is drought and heat tolerant, attracts butterflies and comes in blue, purple and white flowers.