Pulmonarias are compact, clump-forming perennials. Most species and varieties are 8 to 15 inches tall with a spread of 18 to 24 inches. Lungworts can be planted as a single specimen, border, or groundcover. Though they can be left undisturbed for years, lungworts can be propagated by dividing the clumps in early fall. Lungworts don't have serious pest problems.
Powdery mildew can be a problem in areas with poor air circulation.
Insects can also cause minor leaf damage. Listed below are some of the most noteworthy lungwort varieties. Foliage has silver spots. Like many perennials, pulmonarias have an interesting common name. The common name, lungwort, refers to the former belief that the leaves were a cure for ailments of the lung.