Perennial

Lungwort

Pulmonaria officinalis · Boraginaceae · also called soldiers and sailors, Joseph and Mary
By Hannah Price · Updated

Lungwort seasonal calendar
JanFebMarAprMayJunJulAugSepOctNovDec
FlowersFlowers in FebruaryFlowers in MarchFlowers in April
PlantPlant in MarchPlant in AprilPlant in SeptemberPlant in October
PrunePrune in May
Looks goodLooks good in FebruaryLooks good in MarchLooks good in AprilLooks good in MayLooks good in JuneLooks good in JulyLooks good in AugustLooks good in September

Overview

Bristly, white-spotted leaves form low clumps, and in late winter short stems bear clusters of flowers that open pink and age to blue, so both colours show at once. That two-tone habit explains the folk names. Lungworts are a favourite of the hairy-footed flower bee, one of the first solitary bees on the wing. 'Sissinghurst White' has clean white flowers, 'Blue Ensign' is deep blue with plain leaves, and 'Trevi Fountain' is cobalt with heavily silvered foliage.

Where to grow lungwort

Plant under deciduous shrubs, in woodland edges or on a shady bank where the soil stays damp. They tolerate clay and chalk. In hot, dry positions the leaves wilt and mildew quickly. Plant some close to a back door or path, where you will actually see the February flowers and the bees working them on mild days.

Planting

Plant in spring or autumn, 30–40 cm apart, adding leaf mould or compost. Group several together for drifts of early colour under taller shrubs.

Care through the year

Spring

Enjoy the flowers; mulch with leaf mould afterwards.

Summer

Water in dry weather to keep foliage fresh.

Autumn

Divide crowded clumps.

Winter

Clear away old leaves to reveal the emerging flower buds.

Pruning

Once flowering finishes, cut flower stems and old leaves to the base. A neat mound of new, crisply spotted foliage replaces them within weeks and is less prone to mildew.

Propagation

Divide clumps after flowering or in autumn, every few years. Self-sown seedlings appear but vary in leaf pattern and colour; named varieties need dividing.

Common problems

Powdery mildew whitens leaves in dry summers; cutting back and watering is the fix. Slugs eat young leaves. Wilting in sun is a sign the spot is too dry.

Guides to the problems most likely to affect lungwort:

Something else wrong? Diagnose it by symptom.

Month-by-month reminders

Jobs for this plant come round in March, April, May, September and October. Each month page lists everything else worth doing in the garden at the same time.

Related plants

Sources

Botanical names follow Kew's Plants of the World Online; growing attributes were checked against the references below. Text is our own. See our editorial policy.