• 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

Abutilon megapotamicum

trailing abutilon

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
trailing abutilon

© RHS 2001

  • Other common names trailing abutilon

  • Synonyms Abutilon vexillarium

  • Family Malvaceae

  • Genus Abutilon can be evergreen or deciduous shrubs, trees, perennials or annuals, with simple or palmately lobed leaves and bell-shaped or bowl-shaped flowers often with conspicuous stamens

  • Details A. megapotamicum is a deciduous or partially evergreen, medium-sized shrub to 2m, with tapering, narrowly ovate leaves, and pendulous, bell-shaped flowers with yellow petals and large crimson calyx, in summer and autumn

  • Plant range Brazil

Characteristics

  • Foliage Semi-evergreen

  • 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 East-facing

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 1.5-2.5 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow as an indoor or conservatory plant or outside as summer bedding in a sheltered position

Propagation Propagate by seed in spring at 15ºC to 18ºC, or by softwood cuttings

Suggested planting locations and garden types Flower borders and beds Patio & Container Plants

How to care

Pruning Pruning group 9

Pests Can get glasshouse whitefly, glasshouse red spider mite, aphids, mealybugs and scale insects

Diseases May suffer from virus

Advertise here

Did you find the information you were looking for?

RHS members can get exclusive individual advice from the RHS Gardening Advice team.

Join the RHS now