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Tropaeolum Whirlybird Series AGM

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© RHS 1999

Characteristics

Plant type

Annual/Biennial

Habit

Bushy

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Orange, Red or Yellow in Autumn or Summer

Foliage

Pale Green in Autumn, Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

1-2 years


Preferred common name

nasturtium Whirlybird Series

Family

Tropaeolaceae


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

Whirlybird Series are spreading annuals with rounded light green leaves and single or semi-double flowers to 5cm across, in shades of yellow, orange, red and mahogany

How to grow

Sunlight

  • Full sun

Aspect

  • West-facing or East-facing
  • Sheltered or Exposed

Cultivation

Grow in poor, moist but well-drained soil in full sun

Soil

  • Moist but well-drained
  • Acid, Neutral or Alkaline
  • Loam, Clay or Sand

Propagation

Propagate by seed sown in mid spring

Suggested planting locations and garden types

Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Garden Edging or Patio/Container Plants


How to care

Pruning

Cut back after flowering

Pests

Caterpillars, blackfly, flea beetles and slugs may be troublesome

Diseases

May be subject to a virus