• 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

Anemonella thalictroides

mayflower

mayflower

© RHS

  • Other common names mayflower
    rue anemone

  • Family Ranunculaceae

  • Genus Anemonella are small, clump-forming tuberous perennials with fern-like, divided leaves and small clusters of cup-shaped flowers in spring and early summer

  • Details A. thalictroides is a perennial making a spreading clump to 10cm tall, with divided, blue-green leaves and anemone-like white flowers 2cm wide in spring and early summer

  • Plant range E USA

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

  • Partial Shade

  • Aspect North-facing or East-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilLoam

  • pHAcid, Neutral

Size

  • Ultimate height Up to 10 cm

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in moist, moderately fertile, humus-rich soil in part shade. Tubers may rot in very wet soils.

Propagation Propagate by seed sown in containers in a cold frame as soon as ripe. Divide young plants in early spring.

Suggested planting locations and garden types Underplanting of Roses and Shrubs Cottage & Informal Garden Rock Garden

How to care

Pruning No pruning required.

Pests Susceptible to damage from slugs

Diseases Generally disease free.

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