• 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

Mandevilla boliviensis

white mandevilla

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
white mandevilla

© RHS

  • Other common names white mandevilla

  • Family Apocynaceae

  • Genus Mandevilla can be woody climbers or perennials, often with tuberous roots, and twining stems bearing simple leaves and axillary racemes of showy, funnel-shaped flowers with 5 spreading lobes

  • Details M. boliviensis is a woody, twining climber with glossy, evergreen, oval leaves 5-10cm long. In mid- to late summer it produces sprays of three to seven tubular, white flowers 5-9cm across with a yellow eye

Characteristics

  • Foliage Semi-evergreen

  • Habit Climbing

  • Toxicity May cause mild stomach upset if eaten

  • 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)

    H1C

Colour

Sunlight

  • Full Sun

  • Aspect West-facing or East-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilLoam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in a temperate or warm greenhouse or conservatory in loam-based compost in full light but with shade from hot sun. Young plants can be grown in pots to stand outside in summer. Usually evergreen, but will drop leaves if too cold in winter

Propagation Propagate by seed sown with heat in spring, or root softwood cuttings in late spring or semi-ripe cuttings in summer, with bottom heat

Suggested planting locations and garden types Sub-tropical Patio & Container Plants

How to care

Pruning Pruning group 12 in late winter or early spring

Pests Glasshouse red spider mite, glasshouse whitefly and mealybugs may be troublesome

Diseases Generally trouble free

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