Tiarella 'Cygnet'

RHS Plant Profile
foam flower 'Cygnet'
Herbaceous Perennial

A clump-forming, semi-evergreen perennial, to around 35cm high, forming a mound of narrowly lobed green leaves, lightly marked with dark bronze and supposedly shaped like a swan in flight. Long clusters of small, starry pink flowers are held on upright stems above the foliage in spring

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered
Hardiness
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Saxifragaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Clump forming
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
Name Status
Accepted

How to Grow

Cultivation

Thrives in cool, moist, humus-rich soil, in partial or full shade. Protect from drought and excessive winter wet

Propagation

Propagate by division in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
  • Flower borders and beds
  • Ground cover
  • Underplanting of roses and shrubs

Pruning

No pruning required

Pests

May be susceptible to slugs and vine weevil

Diseases

Generally disease-free