• 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

Tanacetum coccineum 'Eileen May Robinson'

pyrethrum 'Eileen May Robinson'

pyrethrum 'Eileen May Robinson'

© RHS 2003

  • Other common names pyrethrum 'Eileen May Robinson'

  • Synonyms Chrysanthemum coccineum 'Eileen May Robinson'
    Pyrethrum 'E.M. Robinson'

    Pyrethrum 'Eileen May Robinson'
    Tanacetum coccineum 'Robinson's Roseum'

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  • Family Asteraceae

  • Genus Tanacetum can be annuals, evergreen or herbaceous perennials or sub-shrubs, with simple or pinnately divided leaves and solitary or clustered, terminal, daisy-like or button-like flower-heads

  • Details 'Eileen May Robinson' is an herbaceous perennial to 75cm, with dark green feathery foliage and solitary, long-stemmed, yellow-centred light pink flowers 6-7cm in width


  • Foliage Deciduous

  • Habit Bushy

  • Toxicity Contact may irritate the skin

  • 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)




  • Full Sun

  • Aspect South-facing

  • Exposure Exposed or Sheltered


  • Sand


  • MoistureWell-drained

  • SoilSand

  • pHAcid, Alkaline, Neutral


  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in a well-drained, preferably sandy soil in full sun although worth trying in any well-drained soil; avoid wet, heavy soils

Propagation Propagate by division in spring. Propagate by basal cuttings in spring

Suggested planting locations and garden types Flower borders and beds Cut Flowers Cottage & Informal Garden Coastal

How to care

Pruning Cut back as flowers fade to encourage a second flowering

Pests May be attacked by aphids, leaf and bud eelworms and leaf-mining flies

Diseases Generally disease free

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