• 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

Convolvulus tricolor

dwarf morning glory

dwarf morning glory

© RHS

  • Other common names dwarf morning glory
    bindweed

    dwarf convolvulus
    small convolvulus

    see more
  • Synonyms Convolvulus minor hort.

  • Family Convolvulaceae

  • Genus Convolvulus can be annuals, perennials or shrubs, erect or scrambling, with simple or palmately divided leaves and solitary or clustered, open funnel-shaped flowers

  • Details C. tricolor is a bushy, spreading annual or short-lived perennial with dark green, oval leaves. The funnel-shaped, royal blue flowers, up to 4cm across, are feathered white towards the base of the petals, with a yellow eye. Each only lasts a day, but they are borne in succession over a long period in summer

  • Plant range Mediterranean

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H3

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow in gritty, well-drained soil in a sheltered, sunny site

Propagation Propagate by seed, root softwood cuttings in late summer, or divide in spring

Suggested planting locations and garden types Flower borders and beds Banks and Slopes City & Courtyard Gardens Coastal Cottage & Informal Garden Gravel Garden Patio & Container Plants

How to care

Pruning Deadhead to prolong flowering

Pests Generally problem free

Diseases Generally problem free

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