Pulmonaria officinalis ‘Bowles’ Blue’ Flower (11/03/2012, Kew, London)
Position: Partial sun to full shade
Flowering period: Spring
Soil: Moist, well drained
Eventual Height: 25cm
Eventual Spread: 40cm
Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a
Family: Boraginaceae
Pulmonaria officinalis ‘Bowles’ Blue’ is a small, spreading, semi-evergreen herbaceous perennial. Its mid green basal like leaves are cordate, simple, and have rounded pale green/ silver spots. Their upper surface is quite hairy. Its blue flowers are 5 petaled and lobed, with a tubular corolla and 5 stamens and are produced in small bunches. The fruit is a dry 1-4 seeded drupe or nutlet. The roots are rhizomes which aid the spread of this plant.
The species Pulmonaria officinalis, commonly known as Lungwort or Common Lungwort, is native to Europe. It is said to be the most widespread plant in Europe. However, it is naturalised and not native to the UK. In its native habitat it occurs in deciduous woodlands.
The etymological root of the binomial name Pulmonaria is derived from the Latin pulmo ‘lungs’ in reference to its historic use. Officinalis is derived from the Latin meaning ‘of the apothecaries’. ‘Bowles’ Blue’ is named after Edward Augustus Bowles (1865-1954), a botanist.
Pulmonaria officinalis ‘Bowles’ Blue’ (11/03/2012, Kew, London)
The landscape architect may find Pulmonaria officinalis ‘Bowles’ Blue’ useful in woodland setting or as understory ground cover as it can tolerate full shade. The plant may die back in hot dry periods and will recover when the temperature falls. This species is more prone to mildew than other Pulmonaria.
Ecologically, Pulmonaria officinalis ‘Bowles’ Blue’ is attractive to bees, bumblebees, butterflies and pollinating insects. The leaves are eaten by the caterpillars of some moths.
Pulmonaria officinalis ‘Bowles’ Blue’ prefers moist, fertile, well-drained soils. It tolerates most pH of soil, including chalky.
Pulmonaria officinalis ‘Bowles’ Blue’ Blue’ requires little maintenance. Large clumps may be lifted and divided in autumn.
landscape architect's pages 
“It’s important for our aspiring landscape architects to understand that site design decisions and development patterns have real implications at the regional scale and that their research and advocacy can be a catalyst for regulation and policy enhancement,” Collett said. “The Landscape Architecture Program appreciates the chance to engage our communities through the PlanET partnership. Such opportunities are of mutual benefit to our students, our program, and the stakeholders of the communities which we serve.”
Is this plant sometime call snowdrop
Denise, I have never heard it called that. I have always known it to be called Lungwort.