• 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

Nephrolepis exaltata

sword fern

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 sword fern
    boss fern

    Boston fern
    ladder fern

    see more
  • Family Lomariopsidaceae

  • Genus Nephrolepis are rhizomatous, sometimes stoloniferous, evergreen ferns with narrow, pinnately divided fronds, broader and more highly dissected in many cultivars

  • Details N. exaltata is an evergreen fern to 1m tall, forming a large clump of narrow, arching, ladder-like, pinnate light green fronds to 2m long, the pinnae narrowly oblong or sickle-shaped; often produces young plant on runners

  • Plant range Tropics

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)

    H1B

Colour

Sunlight

  • Partial Shade

  • Aspect West-facing or East-facing or North-facing

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow indoors or under glass in a multipurpose compost or a mix of 1 part loam, 2 parts sharp sand, and 3 parts leaf mould in bright filtered light, with moderate to high humidity and good ventilation. During the growing season, water moderately soft water and apply a half-strength balanced liquid fertiliser monthly. Water sparingly in winter. Fronds can rot if they become too wet

Propagation Propagate by spores, sow spores at 21°C (70°F) as soon as ripe. Separate rooted runners in late winter or early spring

Suggested planting locations and garden types Patio & Container Plants

How to care

Pruning Remove any dead fronds

Pests Can suffer from scale insects

Diseases Generally disease free but may be subject to rot if fronds become too wet

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