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Echium candicans AGM

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© RHS

Characteristics

Plant type

Annual/Biennial

Habit

Bushy

Resilience

Hardiness

H1c (heated greenhouse - warm temperate)

Colour

Flower

Blue and White in Spring and Summer

Foliage

Green and Grey/Silver in Autumn, Spring, Summer and Winter

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

1.5-2.5 metres

Time to ultimate height

1-2 years


Preferred common name

pride of Madeira

Family

Boraginaceae


Echium can be annuals, biennials, evergreen perennials or shrubs, with simple, coarsely hairy leaves and funnel-shaped flowers borne in panicles or dense spikes in summer

E. candicans is a bushy biennial sub-shrub with grey-hairy lance-shaped leaves and dense terminal spike-like panicles of white, pale or deep blue flowers in spring and summer

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Under glass, grow in a loam-based potting compost (John Innes Number 3) in full light. Water freely when in growth, sparingly in winter. Outdoors, grow in moderately fertile, well-drained soil in full sun. Protect from winter frost in situ with horticultural fleece

Soil

  • Well-drained
  • Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by seed at 13-16°C (55-61°F) in summer, overwintering seedlings at 5-7°C (41-45°F)

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds or Wall-side Borders


How to care

Pruning

No pruning required

Pests

Outdoors slugs may be a problem; indoors glasshouse whitefly and glasshouse red spider mite can be troublesome. vine weevils may also be found

Diseases

Generally disease free