• AGM plants

    AGM plants have been through a rigourous 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

Caltha palustris

Marsh marigold

Marsh marigold

© � RHS 1971

  • Other common names Marsh marigold
    Kingcup

    Boots
    Brave bassinets
    Bull flower
    Cow lily
    Crazy Beth
    Crowfoot
    Drunkards
    Goldes
    Golds
    Goldings
    Gools
    Horse blob
    May blob
    Mare blob
    Marybuds
    Meadow-bright
    Meadow buttercup
    Meadow cowslip
    Meadow gowan
    Publican's cloak
    Publicans-and-sinners
    Soldier's buttons
    Water boots
    Water buttercup
    Water cowslip
    Water dragon
    Water goggles
    Water gowan
    Yellow gowan

    see more
  • Synonyms Caltha cornuta

  • Genus Caltha are rhizomatous herbaceous perennials with simple, usually heart-shaped leaves and cup-shaped yellow or white flowers in early spring

  • Family Ranunculaceae / Ranunculaceae

  • Species C. palustris is a rhizomatous herbaceous perennial to 50cm, with rounded, rich green leaves and clusters of deep yellow flowers 4cm in width

  • Plant range Temp. N. Hemis.

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Exposed

Soil

  • Chalk

    Loam

  • MoisturePoorly-drained

  • SoilLoam

  • pHNeutral, Acid, Alkaline

Size

  • 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 an open site in rich boggy soil at the water's edge in full sun

Propagation Propagate by seed sown as soon as ripe or by division in late summer or early spring

Suggested planting locations and garden types Low Maintenance Wildlife Gardens

How to care

Pruning Cut back after flowering

Pests Generally pest free

Diseases Powdery mildews may be a problem

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