Of course, most plants, including these, have some type of flower (blossom), but their most striking feature is their beautiful foliage.
'Silver Shimmers', (zones 4 to 9) is a stunner for shaded areas. This plant thrives in woodland conditions, with moist, rich, well-drained soil in shade, and grows 1 to 2 feet tall and wide. Give it a site with good air circulation, as some Pulmonaria are prone to mildew, though I've never seen it on this variety. It blooms blue in spring.