• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Aquilegia viridiflora

green-flowered columbine

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  • Other common names green-flowered columbine

  • Synonyms Aquilegia atropurpurea

  • Family Ranunculaceae

  • Genus 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

  • Details A. viridiflora is a short-lived perennial, to 30cm tall, with lobed, divided foliage and small, fragrant flowers with purple-flushed, pale green sepals and deep purple petals and spurs in late spring and early summer

  • Plant range Far East

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

  • Toxicity Ingestion may cause mild stomach upset. Wear gloves and wash hands after handling

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or East-facing or West-facing

  • Exposure Sheltered

Soil

  • Chalk

    Chalk

  • Clay

    Clay

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilChalk, Clay, Loam, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

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

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

How to care

Pruning Cut back foliage affected by fungal diseases

Pests Can get aphids, caterpillars, leaf-mining flies and sawflies

Diseases May be infected by powdery mildews and aquilegia downy mildew

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