Polypodium glycyrrhiza 'Longicaudatum'

RHS Plant Profile
licorice fern 'Longicaudatum'

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licorice fern 'Longicaudatum' RHS 2002

Synonyms

Polypodium vulgare 'Longicaudatum'

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Ferns
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An evergreen fern to 30cm, with creeping rhizome and pinnately lobed fronds which taper gradually to a long, slender point

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or North–facing or West–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)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Polypodiaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Matforming
Genus
Polypodium can be evergreen or deciduous ferns, with creeping rhizomes bearing simple or pinnate fronds at intervals
Name Status
Accepted

How to Grow

Cultivation

Easy to grow in most cool, moist, lightly shaded sites and will grow in full sun if given plenty of moisture. Tolerant of dry shade but water regularly in their first season and mulch well. See how to grow ferns for further advice

Propagation

Propagate by division in spring or early summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • Rock garden
  • Low Maintenance
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

Dead or damaged fronds may be removed as necessary

Pests

Generally pest-free outdoors

Diseases

Generally disease-free outdoors