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Amaranthus hypochondriacus 'Green Thumb'

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© RHS 1999

Characteristics

Plant type

Annual/Biennial

Habit

Bushy

Resilience

Hardiness

old H3 (may need winter protection)

Colour

Flower

Green and Yellow in Autumn and Summer

Foliage

Purple in

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

1 year


Preferred common name

prince's feather 'Green Thumb'

Family

Amaranthaceae


Amaranthus can be upright or spreading annuals or short-lived perennials, with simple leaves and tiny flowers borne in dense, erect or pendulous, catkin-like inflorescences in summer and autumn

'Green Thumb' is a bushy upright-growing annual to 60cm, with large, oblong, purple leaves and erect, plume-like, bright yellow-green inflorescences from summer to early autumn. Good for cutting or drying

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Sheltered

Cultivation

Under glass, grow in loam-based potting compost such as John Innes Number 2, in full sun in a sheltered position

Soil

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

Propagation

Sow seed at 20°C (68°F) in mid spring

Suggested planting locations and garden types

Cottage/Informal Garden or Flower borders and beds


How to care

Pruning

None required

Pests

Aphids may be a problem

Diseases

A virus may be troublesome