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Tropaeolum majus Alaska Series (v) AGM

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© RHS

Characteristics

Plant type

Annual/Biennial

Habit

Bushy

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Cream, Orange, Red or Yellow in Autumn or Summer

Foliage

Green and White 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 year


Preferred common name

nasturtium Alaska 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

Alaska Series are bushy, spreading annuals to 30cm tall, with rounded leaves speckled and splashed with creamy-white, and single flowers to 6cm wide, in shades of cream, yellow, orange and mahogany-red

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Exposed or Sheltered

Cultivation

Best grown in poor, well-drained soil in full sun, if the soil is too rich foliage will be produced at the expense of flowers

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Chalk or Loam

Propagation

Propagate by stem tip cuttings

Suggested planting locations and garden types

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


How to care

Pruning

Cut back after flowering

Pests

May be attacked by caterpillars, flea beetles and blackfly

Diseases

May be affected by a virus