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Vinca difformis

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© Mike L. Grant 2002

Characteristics

Plant type

Shrub

Habit

Mat forming

Toxicity

Resilience

Hardiness

H4 (hardy - average winter)

Colour

Flower

White and Pale Blue in Spring and Winter

Foliage

Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

1-1.5 metres

Time to ultimate height

5-10 years


Preferred common name

intermediate periwinkle

Family

Apocynaceae


Vinca can be evergreen subshrubs or herbaceous perennials, with simple, paired leaves and solitary, 5-lobed, salver-shaped flowers in the leaf axils

V. difformis is a vigorous, prostrate evergreen sub-shrub with rooting stems bearing ovate, evergreen leaves, and short upright leafy stems with pale whitish-blue flowers 4cm across, in late winter and early spring

How to grow

Sunlight

  • Full sun
  • Part shade
  • Full shade

Aspect

  • North-facing, East-facing, South-facing or West-facing
  • Sheltered or Exposed

Cultivation

Easy to grow in all but the driest soils. Flowers best in full sun but very useful for shady areas. Can be invasive

Soil

  • Well-drained, Moist but well-drained or Poorly-drained
  • Acid, Alkaline or Neutral
  • Chalk, Clay, Sand or Loam

Propagation

Propagate by division in spring or autumn and by semi-hardwood cuttings in summer

Suggested planting locations and garden types

Rock Garden or Ground Cover


How to care

Pruning

Pruning group 6

Pests

Can get aphids

Diseases

May be subject to a rust