• 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

Cycas revoluta

cycad

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
  • Other common names cycad
    Japanese sago palm

  • Synonyms Cycas miquelii
    Cycas sexseminifera

  • Family Cycadaceae

  • Genus Cycas are evergreen dioecious perennials with stout woody trunks bearing large, leathery, pinnate leaves in a terminal rosette; male inflorescences are large and cone-like, female ones consist of smaller, modified leaves

  • Details C. revoluta is a slow-growing, palm-like evergreen perennial to 2m, with arching pinnate leaves to 1.5m in length, and golden-brown, ovoid inflorescences which are rarely seen except on mature plants

  • Plant range S Japan, China

Characteristics

  • Foliage Evergreen

  • Habit Tufted

  • 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)

    H2

Colour

Sunlight

  • Partial Shade

  • Aspect South-facing or East-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • MoistureMoist but well-drained

  • SoilLoam

  • pHAcid, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow under glass in a loam-based potting compost with additional leaf mould and grit; provide full light with shade from hot sun and moderate humidity. Water moderately in the growing season, sparingly at other times. Alternatively in frost free areas, grow in a moist but well-drained soil in bright light with some protection from full sun

Propagation Propagate by seed or suckers

Suggested planting locations and garden types Architectural Patio & Container Plants

How to care

Pruning No pruning required

Pests Generally pest free outdoors, but can get glasshouse red spider mite under glass

Diseases Generally disease free

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