• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Amaranthus hypochondriacus 'Green Thumb'

prince's feather 'Green Thumb'

prince's feather 'Green Thumb'

© � RHS 1999

  • Other common names prince's feather 'Green Thumb'

  • Genus 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

  • Family Amaranthaceae / Amaranthaceae

  • Details '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


  • Foliage Deciduous

  • Habit Bushy



  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered


  • Chalk


  • MoistureMoist but well-drained

  • SoilLoam

  • pHAcid, Alkaline, Neutral


  • Ultimate height

    0.5-1 metres

  • Ultimate spread

    0.1-0.5 metres

  • Time to ultimate height

    1 year

How to grow

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

Propagation Sow seed at 20�C (68�F) in mid spring

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden

How to care

Pruning None required

Pests Aphids may be a problem

Diseases A virus may be troublesome

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