Pulmonaria angustifolia 'Blaues Meer'

RHS Plant Profile

lungwort 'Blaues Meer'

RHS

Herbaceous Perennial

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A clump-forming herbaceous perennial 30cm high with deciduous, narrow, hairy, dark green leaves, and dark pink-red buds opening to bright purplish-blue flowers from early to late spring; bees may visit the flowers

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full shade Partial shade

Aspect: North–facing or West–facing or East–facing or South–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Boraginaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Pulmonaria can be herbaceous or semi-evergreen rhizomatous perennials with terminal clusters of funnel-shaped flowers in late winter or early spring, and often strikingly patterned leaves developing in summer
Name Status: Accepted

How to Grow

Cultivation

Grow in partial shade or full shade in well-drained humus-rich soil that stays moist all summer; remove old leaves after flowering; divide every three to five years

Propagation

Propagate by division after flowering or in autumn, or by root cuttings in midwinter

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Wildlife gardens
Flower borders and beds
Ground cover
Underplanting of roses and shrubs

Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to powdery mildews in dry conditions