Mandevilla splendens

RHS Plant Profile
shining mandevilla

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Climber Wall Shrub Conservatory Greenhouse

A vigorous, woody, twining climber with glossy, evergreen, oval leaves 10-20cm long. In mid-to late summer it produces sprays of three to five funnel-shaped, flowers up to 10cm across in rose-pink with a yellow throat

Position

Full sun

Soil Types

Loam

Max Height

4-8 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1-1.5 metres
Max Height
4-8 metres

Growing Conditions

Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
West–facing or East–facing
Exposure
Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apocynaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Climbing
Potentially harmful
May cause mild stomach upset if eatensap may cause skin irritation. Wear gloves and other protective equipment when handling
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
Name Status
Correct

How to Grow

Cultivation

Grow in a temperate or warm greenhouse or conservatory in peat-free, 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

  • Patio and container plants
  • Sub-tropical

Pruning

Pruning group 12 in late winter or early spring

Pests

Maybe susceptible to glasshouse red spider mite, glasshouse whitefly and mealybugs

Diseases

Generally disease-free