• 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

Yucca filifera

St. Peter's palm

  • Other common names St. Peter's palm
    tree yucca

  • Family Asparagaceae

  • Genus Yucca can be evergreen perennials, shrubs or trees, with dense or loose rosettes of stiff, sword-shaped leaves and tall panicles of bell-shaped flowers

  • Details Y. filifera eventually forms a tall, sparsely-branched evergreen tree but is usually seen in cultivation with a single, short trunk. The stiff, spine-tipped leaves, up to 50cm long, have peeling, thread-like edges and are arranged in a dense rosette. Mature plants produce large, hanging clusters of creamy, bell-shaped flowers

  • Plant range Mexico

Characteristics

  • Foliage Evergreen

  • 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

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 8-12 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow in very well-drained soil in full sun in a sheltered position, or grow under glass in gritty compost. Needs to be kept almost dry over winter

Propagation Propagate by seed or remove rooted suckers

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

How to care

Pruning No pruning required, but dead leaves can be removed to improve appearance. Overlarge plants can be cut back in late spring and will reshoot from the trunk

Pests Flower spikes may be attacked by aphids

Diseases May be subject to a leaf spot

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