Polypodium interjectum 'Cornubiense'

RHS Plant Profile
hybrid polypody 'Cornubiense'
hybrid polypody 'Cornubiense' RHS

Other common names

Cornish polypody

Synonyms

Polypodium interjectum 'Cornubiense'
Polypodium vulgare 'Cornubiense'

Award of Garden Merit
Ferns

A vigorous, evergreen fern with a creeping rhizome bearing broadly ovate, bipinnatifid fronds with lobed segments, mixed with occasional simply pinnate ones

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
2–5 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
North–facing or West–facing or South–facing or East–facing
Exposure
Sheltered
Hardiness
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

  • Rock garden
  • City and courtyard gardens
  • Cottage and informal garden
  • Banks and slopes
  • Flower borders and beds
  • Underplanting of roses and shrubs
  • Ground cover

Pruning

Dead or damaged fronds may be removed as necessary

Pests

Generally pest-free outdoors

Diseases

Generally disease-free outdoors