Pulmonaria 'Apple Frost'

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lungwort 'Apple Frost'

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Herbaceous Perennial

A clump-forming to spreading deciduous, herbaceous perennial with green ovate leaves marked with white blotches. The leaves often have a hairy or felt-like texture. Small funnel-shaped blue flowers are produced in spring, often with purple throats

Position

Full shade, Partial shade

Soil Types

Loam, Clay

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Loam Clay
Moisture
Moist but well–drained
pH
Neutral or Acid

Position

Full shade Partial shade
Aspect
West–facing or East–facing or North–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
Matforming, 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 moist but free draining, humus rich soil in shade or partial shade

Propagation

Propagate by division

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds
  • Ground cover
  • Banks and slopes
  • Underplanting of roses and shrubs

Pruning

Faded foliage can be trimmed in late autumn if required

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to powdery mildews when grown in dry conditions