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Herbaceous Perennial

Tiarella wherryi

Wherry's foam flower

A compact, herbaceous perennial to 25cm in height, forming a clump of deeply 3-lobed, purple-tinted leaves with narrow, erect racemes of small, white or pinkish flowers from late spring

Synonyms
Tiarella collina
Tiarella cordifolia var. collina

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Moisture
Moist but well–drained, Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Pink White Green Purple
Summer Pink White Green Purple
Autumn Green Purple
Winter
Position
  • Full sun
  • Partial shade
Aspect

North–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Saxifragaceae
Native to GB / Ireland
No
Foliage
Deciduous
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

Correct

Plant range
SE North America

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 seed in pots in a cold frame as soon as seed is ripe or in spring. Propagate by division in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Rock garden
  • Ground cover
  • Flower borders and beds
  • Underplanting of roses and shrubs
Pruning

No pruning required

Pests

May be susceptible to slugs

Diseases

Generally disease-free

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