• 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

Lysimachia vulgaris

yellow loosestrife

  • Other common names yellow loosestrife
    common loosestrife

    golden loosestrife
    golden willowherb
    willow wort
    wood pimpernel
    yellow rocket
    yellow willowherb

    see more
  • Family Primulaceae

  • Genus Lysimachia are herbaceous or evergreen perennials with simple leaves and star-shaped, cupped or bowl-shaped flowers in terminal racemes or panicles, or solitary in leaf axils

  • Details L. vulgaris is a hairy perennial that forms clumps by creeping stolons or rhizomes. Leaves are ovate, green, sometimes with black dots, and occur in groups of three or four. Yellow flowers are borne in terminal clusters in summer

  • Plant range Europe, Asia

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • Clay

    Clay

  • MoisturePoorly-drained

  • SoilLoam, Clay

  • pH

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Occurs naturally in damp places on rich soils

Propagation Propagate by seed or propagate by division

Suggested planting locations and garden types Wildlife Gardens

How to care

Pruning May be cut back at the end of the season

Pests Generally trouble free

Diseases Generally trouble free

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