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Climber Wall ShrubConservatory Greenhouse

Tropaeolum azureum

blue nasturtium

T. azureum is a summer-dormant, perennial climber to 1m in height, with small, palmate leaves and short-spurred, sky-blue flowers, with a creamy centre, produced in late spring

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Cream Green
Summer
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

West–facing or East–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Tropaeolaceae
Native to the UK
No
Foliage
Deciduous
Habit
Climbing
Potentially harmful
Skin allergen. Wear gloves and other protective equipment when handling
Genus

Tropaeolum can be annuals or perennials, bushy, trailing or climbing by twining stems, with simple or palmately lobed leaves and showy funnel-shaped flowers with five long-clawed petals and often a spur

Name status

Correct

Plant range
Chile

How to grow

Cultivation

Needs winter protection except in very mild areas. Grow under glass in a deep container of loam-based potting compost with added fine grit, starting into growth in autumn and allowing to go dormant after flowering. Requires good light, but with shade from hot sunshine

Propagation

Propagate by seed or division

Suggested planting locations and garden types
  • Patio and container plants
  • Wall side borders
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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