• 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

Amicia zygomeris

yoke-leaved amicia

yoke-leaved amicia

© RHS

  • Other common names yoke-leaved amicia

  • Family Papilionaceae

  • Genus Amicia are upright perennials with alternate leave composed of 4 leaflets, with conspicuous purple-veined stipules and pea-like flowers in autumn

  • Details A. zygomeris is a woody-based perennial with leaves composed of 2 pairs of heart-shaped leaflets. In autumn, pea-like purple and yellow flowers 3cm wide open in short racemes

  • Plant range Mexico

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H4

Colour

Sunlight

  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilLoam, Sand, Chalk

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1.5-2.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Outdoors grow in well drained fertile soil in full sun; mulch in winter in frost prone areas. Will tolerate temperatures down to -10°C (14°F) and regenerate from the woody base if cut back by frost. Under glass grow in loam-based potting compost (JI No.2) in full light.

Propagation Propagate by seed sown at 13-18°C (55-64°F) in spring. Root basal cuttings in summer

Suggested planting locations and garden types Banks and Slopes Wall-side Borders City & Courtyard Gardens Coastal Mediterranean Climate Plants

How to care

Pruning Outdoors, prune out frost damaged growth in late winter

Pests Slugs and snails may be problematic

Diseases Generally disease free

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