• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Pulmonaria longifolia 'Bertram Anderson'

lungwort 'Bertram Anderson'

lungwort 'Bertram Anderson'

© � RHS

  • Other common names lungwort 'Bertram Anderson'

  • 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

  • Family Boraginaceae / Boraginaceae

  • Details 'Bertram Anderson' is a clump-forming semi-evergreen perennial to 30cm, with long, narrow leaves, boldly spotted with silver, and small vivid blue flowers in dense clusters in spring


  • Foliage Semi-evergreen

  • Habit Bushy



  • Full Shade

  • Partial Shade

  • Aspect North-facing or West-facing or East-facing

  • Exposure Sheltered


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilClay, Chalk, Loam

  • pHAcid, Alkaline, Neutral


  • Ultimate height

    0.1-0.5 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in humus-rich, fertile, moist but not waterlogged soil in full or partial shade

Propagation Propagate by division after flowering or in autumn

Suggested planting locations and garden types Banks and Slopes Flower borders and beds Ground Cover City & Courtyard Gardens Coastal Cottage & Informal Garden Wildlife Gardens

How to care

Pruning Remove old leaves after flowering

Pests Generally pest free

Diseases May be subject to powdery mildews in dry conditions

Advertise here

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now