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Aquilegia canadensis AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Toxicity

Ingestion may cause mild stomach upset

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Red and Yellow in Spring and Summer

Foliage

Dark Green in Spring and Summer

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

Canadian columbine

Family

Ranunculaceae


Aquilegia are clump-forming herbaceous perennials with long-stalked, ternately divided basal leaves and erect, leafy stems bearing bell-shaped flowers with spreading, coloured sepals and petals with spurs, on branched stems

A. canadensis is a slender herbaceous perennial to 60cm, with divided, dark green basal leaves and erect stems bearing nodding flowers 3-5cm long, with pale yellow petals and erect, scarlet sepals with straight spurs

Other common names

  • akaly
  • cluckies
  • jack-in-trousers
  • meeting houses
  • rock bells
  • Turk's cap

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

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

Cultivation

Grow in fertile, moist but well-drained soil in full sun or partial shade

Soil

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

Propagation

Propagate by seed sown in pots in a cold frame as soon as seed is ripe or in spring. It can also be propagated by division in spring but the plant will be slow to recover

Suggested planting locations and garden types

City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds, Low Maintenance or Underplanting of Roses and Shrubs


How to care

Pruning

Cut back foliage affected by fungal diseases

Pests

Can get aphids, leaf-mining flies and sawflies

Diseases

May be infected by powdery mildews