Woodwardia unigemmata

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jewelled chain fern

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strong-growing, evergreen fern with arching, bipinnately-divided fronds to 1.5m long, bearing bulbils on the underside towards the tips. Young fronds emerge red, fading to rusty brown then turning green

Position

Partial shade

Soil Types

Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1.5-2.5 metres
Max Height
1-1.5 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained or Poorly–drained
pH
Neutral

Position

Partial shade
Aspect
North–facing or East–facing
Exposure
Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Blechnaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Woodwardia are robust rhizomatous ferns with deciduous or evergreen, pinnate to bipinnate fronds, bearing spores in chain-like lines on the undersides
Name Status
Correct
Plant Range
SE Asia

How to Grow

Cultivation

Grow in neutral, moderately fertile, damp soil in partial shade; in frost prone areas shelter from cold, drying winds and protect in winter with a dry mulch

Propagation

Propagate by spores; sow spores at 16°C in late summer or early autumn. Remove bulbils in autumn or divide in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Architectural
  • City and courtyard gardens
  • Low Maintenance
  • Flower borders and beds
  • Banks and slopes

Pruning

Cut down old fronds when they deteriorate

Pests

Generally pest-free

Diseases

Generally disease-free