• 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

Tiarella 'Spring Symphony' (PBR)

foam flower 'Spring Symphony'

  • Other common names foam flower 'Spring Symphony'

  • Family Saxifragaceae

  • Genus Tiarella are rhizomatous herbaceous perennials forming a clump of rounded, more or less palmately lobed leaves, with very small, star-shaped flowers in terminal panicles or racemes on erect stems

  • Details 'Spring Symphony' is a clump-forming herbaceous perennial, to about 30cm, with deeply-lobed, green leaves marked with dark purple along the midribs. Upright stems carry spires of small, starry, creamy-white flowers, opening from pale pink buds, in late spring and early summer

Characteristics

  • Foliage Deciduous

  • Habit Clump-forming

  • 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)

    H7

Colour

Sunlight

  • Partial Shade

  • Full Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Clay

    Clay

  • MoistureMoist but well-drained

  • SoilChalk, Loam, Clay

  • pHAcid, Alkaline, Neutral

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 Ideally grow in cool, moist, humus-rich soil in partial or full shade but can tolerate a wide range of soils and can spread freely. Protect from excessive winter wet

Propagation Propagate by division in spring

Suggested planting locations and garden types Flower borders and beds Ground Cover Underplanting of Roses and Shrubs Garden Edging Cottage & Informal Garden Rock Garden Patio & Container Plants

How to care

Pruning No pruning needed

Pests Slugs may be a problem

Diseases Generally disease free

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

Get involved

We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.