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  • AGM plants

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

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    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases
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Agave americana

century plant

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
© RHS
Sold by 25 nurseries

  • Other common names century plant
    American aloe

    Mexican soap plant
    maguey

    see more

  • Synonyms Agave gracilispina

  • Family Asparagaceae

  • Genus Agave can be perennial or monocarpic succulents, forming rosettes of usually rigid, fleshy, spiny-edged leaves, with funnel-shaped flowers in racemes or panicles often much taller than the rosettes

  • Details A. americana is an evergreen perennial forming handsome rosettes of spiny-edged, grey-green leaves. Panicles to 8m in length, of greenish-yellow flowers 8cm in length, are produced only by old plants

  • Plant range S USA to Mexico

Characteristics

  • Foliage Evergreen

  • Habit Clump-forming

  • 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

  • Full Sun

  • Aspect East-facing or South-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Loam

  • pHAcid, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow under glass in a standard cactus compost, in bright, filtered light. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter

Propagation Propagate by offsets taken in spring or autumn

Suggested planting locations and garden types Architectural City & Courtyard Gardens Patio & Container Plants Mediterranean Climate Plants Coastal

How to care

Pruning No pruning required

Pests May be attacked by scale insects

Diseases Generally disease free

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